Climate Newsprint

[This Week in Science] Engineering T cells to treat autoimmunity

Science Magazine - Thu, 07/07/2016 - 23:00
Author: Kristen L. Mueller
Categories: Climate Newsprint

[This Week in Science] Location, location, S-acylation

Science Magazine - Thu, 07/07/2016 - 23:00
Author: Pamela J. Hines
Categories: Climate Newsprint

[This Week in Science] Cartilage claims a permanent home

Science Magazine - Thu, 07/07/2016 - 23:00
Author: Megan Frisk
Categories: Climate Newsprint

[This Week in Science] Going with the flow

Science Magazine - Thu, 07/07/2016 - 23:00
Author: Stella M. Hurtley
Categories: Climate Newsprint

[This Week in Science] Dividing asymmetrically to fix muscle

Science Magazine - Thu, 07/07/2016 - 23:00
Author: Beverly A. Purnell
Categories: Climate Newsprint

[This Week in Science] Separating one organic from another

Science Magazine - Thu, 07/07/2016 - 23:00
Authors: Phil Szuromi, Marc S. Lavine
Categories: Climate Newsprint

[This Week in Science] Olefins enlisted to attack ketones

Science Magazine - Thu, 07/07/2016 - 23:00
Author: Jake Yeston
Categories: Climate Newsprint

[This Week in Science] Swim into the light

Science Magazine - Thu, 07/07/2016 - 23:00
Author: Phil Szuromi
Categories: Climate Newsprint

[This Week in Science] Resolving a network of hubs

Science Magazine - Thu, 07/07/2016 - 23:00
Author: Barbara R. Jasny
Categories: Climate Newsprint

[This Week in Science] In situ vaccine production and delivery

Science Magazine - Thu, 07/07/2016 - 23:00
Author: Philip Yeagle
Categories: Climate Newsprint

[Editors' Choice] A viral blight on ocean sunshine sugars

Science Magazine - Thu, 07/07/2016 - 23:00
Author: Guy Riddihough
Categories: Climate Newsprint

[Editors' Choice] Silica surfaces send the heat away

Science Magazine - Thu, 07/07/2016 - 23:00
Author: Brent Grocholski
Categories: Climate Newsprint

[Editors' Choice] Even more pain in opioid treatment

Science Magazine - Thu, 07/07/2016 - 23:00
Author: L. Bryan Ray
Categories: Climate Newsprint

[Editors' Choice] Carboxylating stubborn alkyl chlorides

Science Magazine - Thu, 07/07/2016 - 23:00
Author: Phil Szuromi
Categories: Climate Newsprint

[Editors' Choice] Breathing life into the antiviral response

Science Magazine - Thu, 07/07/2016 - 23:00
Author: Kristen L. Mueller
Categories: Climate Newsprint

[Editors' Choice] How a particle gets its quantum kicks

Science Magazine - Thu, 07/07/2016 - 23:00
Author: Ian S. Osborne
Categories: Climate Newsprint

[Research Article] Asymmetric division of clonal muscle stem cells coordinates muscle regeneration in vivo

Science Magazine - Thu, 07/07/2016 - 23:00
Skeletal muscle is an example of a tissue that deploys a self-renewing stem cell, the satellite cell, to effect regeneration. Recent in vitro studies have highlighted a role for asymmetric divisions in renewing rare “immortal” stem cells and generating a clonal population of differentiation-competent myoblasts. However, this model currently lacks in vivo validation. We define a zebrafish muscle stem cell population analogous to the mammalian satellite cell and image the entire process of muscle regeneration from injury to fiber replacement in vivo. This analysis reveals complex interactions between satellite cells and both injured and uninjured fibers and provides in vivo evidence for the asymmetric division of satellite cells driving both self-renewal and regeneration via a clonally restricted progenitor pool. Authors: David B. Gurevich, Phong Dang Nguyen, Ashley L. Siegel, Ophelia V. Ehrlich, Carmen Sonntag, Jennifer M. N. Phan, Silke Berger, Dhanushika Ratnayake, Lucy Hersey, Joachim Berger, Heather Verkade, Thomas E. Hall, Peter D. Currie
Categories: Climate Newsprint

[Report] A metal-organic framework–based splitter for separating propylene from propane

Science Magazine - Thu, 07/07/2016 - 23:00
The chemical industry is dependent on the olefin/paraffin separation, which is mainly accomplished by using energy-intensive processes. We report the use of reticular chemistry for the fabrication of a chemically stable fluorinated metal-organic framework (MOF) material (NbOFFIVE-1-Ni, also referred to as KAUST-7). The bridging of Ni(II)-pyrazine square-grid layers with (NbOF5)2– pillars afforded the construction of a three-dimensional MOF, enclosing a periodic array of fluoride anions in contracted square-shaped channels. The judiciously selected bulkier (NbOF5)2– caused the looked-for hindrance of the previously free-rotating pyrazine moieties, delimiting the pore system and dictating the pore aperture size and its maximum opening. The restricted MOF window resulted in the selective molecular exclusion of propane from propylene at atmospheric pressure, as evidenced through multiple cyclic mixed-gas adsorption and calorimetric studies. Authors: A. Cadiau, K. Adil, P. M. Bhatt, Y. Belmabkhout, M. Eddaoudi
Categories: Climate Newsprint

[Report] Pore chemistry and size control in hybrid porous materials for acetylene capture from ethylene

Science Magazine - Thu, 07/07/2016 - 23:00
The trade-off between physical adsorption capacity and selectivity of porous materials is a major barrier for efficient gas separation and purification through physisorption. We report control over pore chemistry and size in metal coordination networks with hexafluorosilicate and organic linkers for the purpose of preferential binding and orderly assembly of acetylene molecules through cooperative host-guest and/or guest-guest interactions. The specific binding sites for acetylene are validated by modeling and neutron powder diffraction studies. The energies associated with these binding interactions afford high adsorption capacity (2.1 millimoles per gram at 0.025 bar) and selectivity (39.7 to 44.8) for acetylene at ambient conditions. Their efficiency for the separation of acetylene/ethylene mixtures is demonstrated by experimental breakthrough curves (0.73 millimoles per gram from a 1/99 mixture). Authors: Xili Cui, Kaijie Chen, Huabin Xing, Qiwei Yang, Rajamani Krishna, Zongbi Bao, Hui Wu, Wei Zhou, Xinglong Dong, Yu Han, Bin Li, Qilong Ren, Michael J. Zaworotko, Banglin Chen
Categories: Climate Newsprint
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