This study reports the effects of long-term elevated atmospheric CO2 on root production and microbial activity, biomass, and diversity in a chaparral ecosystem in southern California. The free air CO2 enrichment (FACE) ring was located in a stand dominated by the woody shrub Adenostoma fasciculatum. Between 1995 and 2003, the FACE ring maintained an average daytime atmospheric CO2 concentration...

In this thesis, we study the structure of epitaxial graphene formed on polar faces of SiC the (0001) face, also known as the Si-face, and the (0001 ) face, known as the C-face. On both polar surfaces, graphene films are prepared in ultra-high vacuum (UHV), in environments either of argon or cryogenically purified neon, or in a low-pressure background of disilane. Characterization of graphene is...

background a large amount of money is allocated to hypertension in terms of remedial and care costs, but fighting against this disease begins with education. objectives this study has been conducted with the aim of comparing the effect of two methods: face-to-face education and distance education (via short message service [sms]) on amount of following remedial diet in patients suffering from h...

The authors neglected to cite a related study that reports an ARPES experiment indicating the presence of multiple p bands in multilayer graphene on C-face SiC. 1 This is given below as Reference 1. In the present Article, nano-ARPES band mappings of individual graphene grains unambiguously show that multilayer C-face graphene exhibits multiple p-bands.

The present report introduces, as a first study, the concept and methods of oscillatory brain dynamics to analyze well-known (familiar) and unfamiliar face processing in the 800 ms following a face presentation. We analyzed event-related oscillations in young, healthy subjects (N=26) by using three types of stimulation: (1) a simple light signal, (2) the picture of the face of an anonymous elde...

The title compound, [HfW(C(5)H(5))(2)(C(7)H(5)O)Cl(CO)(5)] or [W(CO)(5)(C(7)H(5)O){Hf(C(5)H(5))(2)Cl}], contains two metal centres, with a (tungstenpenta-carbon-yl)oxy-phenyl-carbene unit coordinated to a hafnocene chloride. The Hf-O-C angle is nearly linear, and the C=O distance is slightly shorter than for equivalent alkoxy-carbenes. One of the cyclo-penta-dienyl (Cp) rings undergoes an offse...

We characterize the exposed faces of convex sets C of symmetric matrices, invariant under orthogonal similarity (U T CU = C for all orthogonal U). Such sets C are exactly those determined by eigenvalue constraints: typical examples are the positive semideenite cone, and unit balls of common matrix norms. The set D of all diagonal matrices in C is known to be convex if and only if C is, and D is...

In the title compound, C(12)H(11)N(5)O(2), the mol-ecule adopts an E configuration, with the benzene and pyrazine rings located on opposite sides of the N=C double bond. The face-to-face separations of 3.413 (14) and 3.430 (8) Å, respectively between parallel benzene rings and between pyrazine rings indicate the existence of π-π stacking between adjacent mol-ecules. The crystal structure also c...

The dioxaphospho-lane ring in the title compound, C(20)H(17)O(3)P, adopts an envelope conformation about one of the ring carbons. The benzene rings of the compound do not form face-to-face π-π inter-actions, instead weak C-H⋯π inter-actions occur between adjacent mol-ecules. The methine H atoms on the dioxaphospho-lane ring form weak C-H⋯O hydrogen bonds to the oxide group of an adjacent mol-ec...