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Marcel Proust
This is a concise critical biography of Marcel Proust, one of the most important writers of the 20th century. The book considers Proust's early years of personal and aesthetic experiment, the growth of his masterwork 'A la recherche du temps perdu', and his personal decline due to ill-health.
BOOK
Global stocks and capacity of mineral-associated soil organic carbon
Soil is the largest terrestrial reservoir of organic carbon and is central for climate change mitigation and carbon-climate feedbacks. Chemical and physical associations of soil carbon with minerals play a critical role in carbon storage, but the amount and global capacity for storage in this form remain unquantified. Here, we produce spatially-resolved global estimates of mineral-associated organic carbon stocks and carbon-storage capacity by analyzing 1144 globally-distributed soil profiles. We show that current stocks total 899 Pg C to a depth of 1 m in non-permafrost mineral soils. Although this constitutes 66% and 70% of soil carbon in surface and deeper layers, respectively, it is only 42% and 21% of the mineralogical capacity. Regions under agricultural management and deeper soil layers show the largest undersaturation of mineral-associated carbon. Critically, the degree of undersaturation indicates sequestration efficiency over years to decades. We show that, across 103 carbon-accrual measurements spanning management interventions globally, soils furthest from their mineralogical capacity are more effective at accruing carbon; sequestration rates average 3-times higher in soils at one tenth of their capacity compared to soils at one half of their capacity. Our findings provide insights into the world’s soils, their capacity to store carbon, and priority regions and actions for soil carbon management.
Mineral-organic associations play a key role in soil carbon preservation. Here, Georgiou et al. produce global estimates of mineral-associated soil carbon, providing insight into the world’s soils and their capacity to store carbon
Journal Article
The Cambridge Introduction to Marcel Proust
\"Proust's A la recherche du temps perdu (In Search of Lost Time, 1913-27) changed the course of modern narrative fiction. This Introduction provides an account of Proust's life, the socio-historical and cultural contexts of his work and an assessment of his early works. At its core is a volume-by-volume study of In Search of Lost Time, which attends to its remarkable superstructure, as well as to individual images and the intricacies of Proust's finely-stitched prose. The book reaches beyond stale commonplaces of madeleines and memory, alerting readers to Proust's verbal virtuosity, his preoccupations with the fleeting and the unforeseeable, with desire, jealousy and the nature of reality. Lively, informative chapters on Proust criticism and the work's afterlives in contemporary culture provide a multitude of paths to follow. The book charges readers with the energy and confidence to move beyond anecdote and hearsay and to read Proust's novel for themselves\"-- Provided by publisher.
BOOK
A mathematical nature walk
How tall is that tree? How far away is that cloud, and how heavy is it? Why are the droplets on that spider web spaced apart so evenly? If you have ever asked questions like these while outdoors, and wondered how you might figure out the answers, this is a book for you.
Book
Microporous organic nanotube assisted design of high performance nanofiltration membranes
Microporous organic nanotubes (MONs) hold considerable promise for designing molecular-sieving membranes because of their high microporosity, customizable chemical functionalities, and favorable polymer affinity. Herein, we report the use of MONs derived from covalent organic frameworks to engineer 15-nm-thick microporous membranes via interfacial polymerization (IP). The incorporation of a highly porous and interpenetrated MON layer on the membrane before the IP reaction leads to the formation of polyamide membranes with Turing structure, enhanced microporosity, and reduced thickness. The MON-modified membranes achieve a remarkable water permeability of 41.7 L m
−2
h
−1
bar
−1
and high retention of boron (78.0%) and phosphorus (96.8%) at alkaline conditions (pH 10), surpassing those of reported nanofiltration membranes. Molecular simulations reveal that introducing the MONs not only reduces the amine molecule diffusion toward the organic phase boundary but also increases membrane porosity and the density of water molecules around the membrane pores. This MON-regulated IP strategy provides guidelines for creating high-permeability membranes for precise nanofiltration.
Microporous organic nanotubes (MONs) hold considerable promise for designing molecular-sieving membranes because of high microporosity, customizable chemical functionalities, and favorable polymer affinity. Here, the authors report the usage of MONs derived from covalent organic frameworks to engineer 15-nm-thick microporous membranes via interfacial polymerization.
Journal Article
الاحتماء بالعدم : رواية
تقع ماري ضحية الرتابة في الحياة الاجتماعية وتعاني من أمراض العصر النفسية ؛ فلا تجد مفرا من التكرار العبثي في المحيط والأسى الداخلي في النفس إلا بالتعاطف مع المستضعفين المغلوبين على أمرهم ؛ فتبذل ذاتها كاملة لمساعدة اللاجئين التعساء وتكرس حياتها لخدمتهم. لذا تقع في المغالاة إذ تقصر في أداء واجباتها الأسرية وتثير ردودا مجتمعية تستهجن أفعالها الإنسانية حين تساعد الغرباء المنبوذين. فهل تلجأ إلى اللاجئين لتستقر نفسها التعبة؟ وما هو مآل اللجوء إن لم يكن \"احتماء بالعدم\"
BOOK
Index theory for locally compact noncommutative geometries
Spectral triples for nonunital algebras model locally compact spaces in noncommutative geometry. In the present text, we prove the
local index formula for spectral triples over nonunital algebras, without the assumption of local units in our algebra. This formula has
been successfully used to calculate index pairings in numerous noncommutative examples. The absence of any other effective method of
investigating index problems in geometries that are genuinely noncommutative, particularly in the nonunital situation, was a primary
motivation for this study and we illustrate this point with two examples in the text.
In order to understand what is new in our
approach in the commutative setting we prove an analogue of the Gromov-Lawson relative index formula (for Dirac type operators) for even
dimensional manifolds with bounded geometry, without invoking compact supports. For odd dimensional manifolds our index formula appears
to be completely new. As we prove our local index formula in the framework of semifinite noncommutative geometry we are also able to
prove, for manifolds of bounded geometry, a version of Atiyah’s
To prove the local index formula, we develop an
integration theory compatible with a refinement of the existing pseudodifferential calculus for spectral triples. We also clarify some
aspects of index theory for nonunital algebras.
eBook
A signal-to-noise paradox in climate science
We review the growing evidence for a widespread inconsistency between the low strength of predictable signals in climate models and the relatively high level of agreement they exhibit with observed variability of the atmospheric circulation. This discrepancy is particularly evident in the climate variability of the Atlantic sector, where ensemble predictions using climate models generally show higher correlation with observed variability than with their own simulations, and higher correlations with observations than would be expected from their small signal-to-noise ratios, hence a ‘signal-to-noise paradox’. This unusual behaviour has been documented in multiple climate prediction systems and in the response to a number of different sources of climate variability. However, we also note that the total variance in the models is often close in magnitude to the observed variance, and so it is not a simple matter of models containing too much variability. Instead, the proportion of Atlantic climate variance that is predictable in climate models appears to be too weak in amplitude by a factor of two, or perhaps more. In this review, we provide a range of examples from existing studies to build the case for a problem that is common across different climate models, common to several different sources of climate variability and common across a range of timescales. We also discuss the wider implications of this intriguing paradox.
Journal Article