نتایج جستجو برای: caving zone cz
تعداد نتایج: 113514 فیلتر نتایج به سال:
Critical Zone (CZ) research investigates the chemical, physical, and biological processes that modulate the Earth's surface. Here, we advance 12 hypotheses that must be tested to improve our understanding of the CZ: (1) Solar-to-chemical conversion of energy by plants regulates flows of carbon, water, and nutrients through plant-microbe soil networks, thereby controlling the location and extent...
We have recently shown that the inability of repetitive ischemia (RI) to activate p38 MAPK (p38) and Akt in metabolic syndrome [JCR:LA-cp (JCR)] rats was associated with impaired coronary collateral growth (CCG). Furthermore, Akt and p38 activation correlated with optimal O(2)(-). levels and were altered in JCR rats, and redox-sensitive p38 activation was required for CCG. Here, we determined w...
The structure of the extracellular matrix (ECM) of representatives of all four sections of the genus Volvox was examined by a combination of light- and electron-microscopic methods. On the basis of these observations, plus published descriptions of aspects of ECM organization in other members of the order Volvocales, a system of nomenclature is proposed, to facilitate discussion of comparative ...
A novel series of the Co/Zn-MSN catalysts with Si/Zn molar ratio of 10 and 1, 3, 5 and 7 wt% Cobalt (denoted by CZ-X-MSN) were synthesized using post-synthesis methods. The samples were characterized by XRD, SEM, FTIR, TEM and nitrogen sorption methods. With a constant Si/Zn ratio, the increase of cobalt species from 1 to 7 wt% led to decrease the catalysts surface area from 408 m2g-1 for CZ-1-...
We have processed pin-diodes and strip detectors on nand p-type high-resistivity silicon wafers grown by magnetic Czochralski method. The Czochralski silicon (Cz-Si) wafers manufactured by Okmetic Oyj have nominal resistivity of 900O cm and 1.9 kO cm for nand p-type, respectively. The oxygen concentration in these substrates is slightly less than typically in wafers used for integrated circuit ...
27.9% Efficient Monolithic Perovskite/Silicon Tandem Solar Cells on Industry Compatible Bottom Cells
Monolithic perovskite/silicon tandem solar cells recently surpass the efficiency of silicon single-junction cells. Most utilize >250 ?m thick, planarized float-zone (FZ) silicon, which is not compatible with commercial production using <200 thick Czochralski (CZ) silicon. The based on industrially relevant 100 CZ-silicon without mechanical planarization are demonstrated. best power conversion (...
The shoot apicalmeristem (SAM) acts as a reservoir for stem cells. The central zone (CZ) harbors stem cells. The stem cell progenitors differentiate in the adjacent peripheral zone and in the rib meristem located just beneath the CZ. The SAM is further divided into distinct clonal layers: the L1 epidermal, L2 sub-epidermal and L3 layers. Collectively, SAMs are complex structures that consist of...
Using the results of a satisfaction survey to demonstrate the impact of a new library service model.
BACKGROUND In 2005, the University of Calgary entered into a contract to provide library services to the staff and physicians of Alberta Health Services Calgary Zone (AHS CZ), creating the Health Information Network Calgary (HINC). OBJECTIVES A user satisfaction survey was contractually required to determine whether the new library service model created through the agreement with the Univer...
Vibration signal analysis of coal-gangue based on Hilbert marginal spectrum in clean coal technology
With the increase of social demand on environmental quality, the clean coal technology (CCT) is one of the most effective measures for environmental control. It is an important means in CCT to decrease the gangue content. Targeting at distinguishing the top-coal and gangue, this paper discussed coalgangue interface detection on fully mechanised mining face. The Hilbert marginal spectrum based o...
The key to the safe mining of thick coal seams under rivers is understanding the development patterns of fractured water-conducting zones (FWCZ) when various mining methods are used. To solve this problem, we employed numerical simulation to investigate FWCZ when slice mining and longwall caving mining are performed. When slice mining was carried out, the maximum height of the FWCZ in the highe...
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