16 research outputs found
Frequency of pollutants listed by section 303(d) of the Clean Water Act for catchments in networks 5, 8, and 9.
<p>The counts of sediment/siltation and temperature are likely due to incompatible forestry.</p
Dendrogram showing hierarchical division of estuary networks and agglomeration schedule.
<p>The hierarchical clustering identified nine substantive networks at a Euclidean distance of 2.5. Major divisions are by development (Network 2; d = 16), impaired inflows (Networks 1, 5, 8; d = 10), and approved shellfish growing areas (Networks 4; d = 7.5).</p
Geographic summary statistics for each estuary network.
<p>Standard distance is a measure of the spatial dispersion of the network, lower values are compact, higher values are spread out. The proportion area is the total area of the network divided by the total area of all estuaries in the study. Proportion sample is the number of estuaries in the network divided by the total number in the study.</p
Mean values for threat variables for each network (development, shoreline development and armoring, port facilities, toxics release, agriculture, dams, shellfish aquaculture, clearcutting, 303(d) streams, precipitation reduction).
<p>High values for any threat indicates relatively more stress on the estuary.</p
Map of estuary networks in the study region.
<p>Networks were created using hierarchical cluster analysis of 11 variables that represent stresses to estuaries in the region.</p
Conceptual diagram showing estuary stresses mapped from land and sea sources combined using cluster analysis to create regional networks.
<p>These networks can ideally inform local conservation actions.</p
Regioselective C–H Bond Alkynylation of Carbonyl Compounds through Ir(III) Catalysis
Selective C–H bond alkynylation
toward modular access to
material and pharmaceutical molecules is of great desire in modern
organic synthesis. Reported herein is IrÂ(III)-catalyzed regioselective
C–H alkynylation of ketones and esters, which is generally
applicable for the rapid construction of molecular complexity. This
protocol provides a complementary process for conventional alkyne
synthesis. Further functionalization of carbonyl-derived material
molecules and pharmaceuticals demonstrates the potential synthetic
utility of this methodology
Manganese-Loaded Dual-Mesoporous Silica Spheres for Efficient T1- and T2-Weighted Dual Mode Magnetic Resonance Imaging
A novel
class of manganese-based dual-mode contrast agents (DMCAs) based on
the core–shell structured manganese-loaded dual-mesoporous
silica spheres (Mn-DMSSs) for simultaneous T1- and T2-weighted magnetic
resonance imaging (MRI) has been successfully reported. The in vitro
MR tests demonstrate that the Mn-based DMCAs display an excellent
simultaneous T1-weighted and T2-weighted MR imaging effect with a
noticeably high T1 relaxivity (<i>r</i><sub>1</sub>) of
10.1 mM<sup>–1</sup>s<sup>–1</sup> and a moderately
high T2 relaxivity (<i>r</i><sub>2</sub>) of 169.7 mM<sup>–1</sup>s<sup>–1</sup>. The Mn-based DMCAs exhibit
negligible cytotoxicity with >80% cell viability at a concentration
of up to 200 μg/mL in human liver carcinoma (HepG2) and mouse
macrophage (RAW264.7) cells after 24 h. Confocal laser scanning microscopy
(CLSM) results show that the Mn-DMSSs were internalized via endocytosis
and located in the cytoplasm but not in the nucleus. The in vivo experiment
shows that the signals of rat liver increased by 29% under T1-weighted
imaging mode and decreased by 28% under T2-weighted imaging mode in
5 min postinjection of Mn-DMSSs, which reveal that the novel Mn-loaded
DMSSs can be used as both positive (T1-weighted) and negative (T2-weighted)
MR contrast agents in further biomedical applications
Baseline patient characteristics (n = 124).
<p>Abbreviations: IQR, interquartile range; KPS, Karnofsky performance status; BMI, body mass index; BSA, body surface area; SM, skeletal muscle; VAT, visceral adipose tissue; SAT, subcutaneous adipose tissue; HU, Hounsfield unit.</p><p>Baseline patient characteristics (n = 124).</p
Cox regression models analyzing the potential influence of body composition variables on OS times.
<p>Abbreviations: HR, hazard ratio; VATI, visceral adipose tissue index; SATI, subcutaneous adipose tissue index; SMI, skeletal muscle index; BMI, body mass index; BSA, body surface area; VATD, visceral adipose tissue density; SATD, subcutaneous adipose tissue density; SMD, skeletal muscle density</p><p>* interaction term with BMI was included</p><p>Cox regression models analyzing the potential influence of body composition variables on OS times.</p