نتایج جستجو برای: natural solid

تعداد نتایج: 662791  

2016
Frank Hensgen Michael Wachendorf

Biodiversity of semi-natural grasslands is increasingly endangered by successful invasive plant species such as the legume Lupinus polyphyllus Lindl. In order to contain the propagation of this plant species, early and regular harvesting needs to be applied. Therefore, a form of utilization for the harvested biomass has to be developed. One opportunity could be the use of the biomass as a feeds...

2004
L. F. Dobrzhinetskaya A. P. Renfro

Figure 1. Secondary-electron scanning electron microscope images showing morphologies of (A) natural and (B, D, and E) synthetic diamonds. C: Energy-dispersive X-ray spectrum for diamond in B. Natural diamonds are separates from felsic gneiss of Kokchetav massif, Kazakhstan. Synthetic diamonds are crystallized from graphite 1 Mg(OH)2 systems and exhibit irregular skeletal morphology similar to ...

Journal: :Phytomedicine : international journal of phytotherapy and phytopharmacology 2014
Beena Joy S Nishanth Kumar M S Soumya A R Radhika M Vibin Annie Abraham

The present study was carried out to assess the photosensitizing potential of embelin, the biologically active natural product isolated from Embelia ribes in photodynamic therapy (PDT) experiments in vivo. In vitro PDT clearly indicated that embelin recorded significant cytotoxicity in Ehrlich's Ascites Carcinoma (EAC) cells, which is superior to 5-aminolevulinic acid, a known photodynamic comp...

2012
Ali M. MAHMOUD Hany A. EL-SHEMY

Over more than five decades, cancer remains a national and international health problem regardless of the discovery of several dozens of novel anticancer drugs (natural and synthetic). Accordingly, screening of natural products for promising anti cancer activity is very initiative field of studies in several countries with diversity of gardenia. Breast and cervix cancers are of the most common ...

2004
Monique A. Barbee Laura Williams

Superadiabatic Partial Oxidation for Hydrogen and Sulfur Production from Hydrogen Sulfide The Gas Technology Institute has been investigating superadiabatic partial oxidation concepts to not only develop novel, cost-effective processes to recover hydrogen and sulfur from hydrogen sulfide, but also produce hydrogen from natural gas and other liquid hydrocarbons, and gasify solid feedstocks, incl...

Journal: :Molecules 2008
Tim S Bugni Mary Kay Harper Malcolm W B McCulloch Jason Reppart Chris M Ireland

The high-throughput screening and drug discovery paradigm has necessitated a change in preparation of natural product samples for screening programs. In an attempt to improve the quality of marine natural products samples for screening, several fractionation strategies were investigated. The final method used HP20SS as a solid support to effectively desalt extracts and fractionate the organic c...

Journal: :Historia, ciencias, saude--Manguinhos 2005
Maria Margaret Lopes Sandra Elena Murriello

In the closing decades of the nineteenth century, natural history museums established solid communication networks, and their different audiences formed what became known as the 'museum movement'. It was within this context of exchange that William H. Flower made his 1889 speech on the roles natural history museums should play. The article analyzes his influence on Argentina's Museo da La Plata...

Journal: :British journal of haematology 2015
Toby A Eyre Graham P Collins

It has long been understood that the immune system has intrinsic anti-tumour activity in humans, and that a key mechanism of tumour progression is the ability of a tumour to escape this immune surveillance. A number of attempts have been made to harness this anti-tumour immunity in both solid tumour oncology and haematological malignancies with variable success. Examples include the use of allo...

2015
Uzair N. Mughal Hassan A. Khawaja

An effort is made to analyse the stresses experienced by the human femur. In order to achieve these results a CAD model was developed by using the 3-D scanning of generic human femur for an individual of 70 kg weight (approx. averaged adult weight). The marrow cavity has been approximated as a hollow cylinder. The FEM model was built using solid tetrahedral element (20-noded 186 structural soli...

Journal: :Bioresource technology 2012
Frank Hensgen Lutz Bühle Iain Donnison Mariecia Frasier Jim Vale John Corton Katrin Heinsoo Indrek Melts Michael Wachendorf

The integrated generation of solid fuel and biogas from biomass (IFBB) is particularly designed for the conversion of semi-natural and high biodiversity grassland biomass into energy. This biomass is problematic in common energy conversion techniques, e.g. biogas conversion or combustion, because of its chemical composition. The IFFB process separates the material into a fibre rich solid fuel a...

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