While Glaciers Slept: Being Human in a Time of Climate Change by M Jackson

Review of M. Jackson\u27s While Glaciers Slept: Being Human in a Time of Climate Change

In silico designed microporous carbons

AbstractThis work presents a computational study on the packing of three-dimensional carbon nanostructures and their effect on gas adsorption properties. We show that it is possible to obtain intrinsically microporous materials without specifying structural properties such as surface area or pore size distribution by packing individual graphene platelets connected at a contortion site. The resulting structures can potentially represent disordered carbons and provide understanding of the relationship between pore structure and adsorption performance. The calculated CO2/CH4 selectivity of these materials at the zero coverage selectivity can be as high as 25, whilst at low finite pressures (0.05bar) is between 6 and 10, which is comparable with what is expected for most carbons. We compare the results to the ones obtained from a simple slit pore model and highlight the importance of pore morphological complexity to adsorption of industrially important gases

Camp Shriver – A Free Inclusive Summer Sports Camp for Children with and without Disabilities

Camp Shriver at UMass Boston is in its 9th year, providing a free and fully inclusive summer recreational program for children in the communities of Boston and Quincy. Having served almost 1,000 campers, Camp Shriver at UMass Boston reaches out to children and families who have few opportunities, particularly families of children with disabilities

Realizing the Value of Corporate Real Estate Management

This study examines how corporate real estate management (CREM) departments are viewed within the larger corporate culture. It draws particular attention to the European and U.S. markets, focusing on four specific sectors: Banking, energy, telecommunication, and transport and logistics. The study reveals that although corporate real estate remains an important asset on corporate balance sheets, it is currently under-managed in both the United States and Europe, and CREM departments lack prominence in most companies. As a result, companies are not realizing the full value of their real estate assets, and are turning attention to them only in difficult times when property valuations are generally depressed

Molecular Simulation of Adsorption: Gibbs Dividing Surface and Comparison With Experiment

At low temperature near the normal boiling point, computer simulations of adsorption of gases can be compared directly with experiment. However, for adsorptive gas separations in which the gas is adsorbed near or above its critical temperature, absolute simulation variables must be converted to excess variables for comparison with experiment. The conversion of absolute to excess variables requires the helium pore volume of the adsorbent. Lennard-Jones potential parameters for helium gas molecules interacting with the oxygen atoms of silicalite are ε/k = 28.0 K and σ = 2.952 Å. The helium pore volume of silicalite is 0.175 cm3/g. Lennard-Jones potential parameters derived for Ar-O interactions in silicalite are ε/k = 93.0 K and σ = 3.335 Å. Density profiles for adsorption of argon in silicalite at 300 K show that the local density is highest in the middle of the channels where the gas-solid potentials overlap

Solvent-induced morphological transitions in methacrylate-based block-copolymer aggregates

Poly(ethylene oxide)-$\textit{b}$-poly(butylmethacrylate) (PEO-$\textit{b}$-PBMA) copolymers have recently been identified as excellent building blocks for the synthesis of hierarchical nanoporous materials. Nevertheless, while experiments have unveiled their potential to form bicontinuous phases and vesicles, a general picture of their phase and aggregation behavior is still missing. By performing Molecular Dynamics simulations, we here apply our recent coarse-grained model of PEO-$\textit{b}$-PBMA to investigate its self-assembly in water and tetrahydrofuran (THF) and unveil the occurrence of a wide spectrum of mesophases. In particular, we find that the morphological phase diagram of this ternary system incorporates bicontinuous and lamellar phases at high copolymer concentrations, and finite-size aggregates, such as dispersed sheets or disk-like aggregates, spherical vesicles and rod-like vesicles, at low copolymer concentrations. The morphology of these mesophases can be controlled by tuning the THF/water relative content, which has a striking effect on the kinetics of self-assembly as well as on the resulting equilibrium structures. Our results disclose the fascinating potential of PEO-$\textit{b}$-PBMA copolymers for the templated synthesis of nanostructured materials and offer a guideline to fine-tune their properties by accurately selecting the THF/water ratio