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Kim N - - 2000
Mediator-coupled microbial fuel cells containing Proteus vulgaris were constructed and the cell performance was tested. Fuel cell efficiency depended on the carbon source in the initial medium of the microorganism. Maltose and trehalose were not utilized substantially by P. vulgaris; however, their presence in the initial medium resulted in enhanced ...
Takaya Yam,To Akira Ogawa
this paper the influS99 of cellstru4MM2 on the performance of LEOS systems. In order to show the impact of cell shape, we change the cell size keeping the
Ando Katsuhiko - - 2000
A new hyphomycetous genus, Pseudosigmoidea, is established with a single species, P. cranei, based on ATCC 16660 previously identified as Sigmoidea prolifera. The conidial ontogeny of Pseudosigmoidea is enteroblastic, and its conidiogenesis is phialidic. On the other hand, Sigmoidea is redescribed with holoblastic conidial ontogeny and with conidiogenous cells proliferating ...
Geens, Wim
A blend of a 5-ring n-octyloxy-substituted oligo(p-phenylene vinylene) and C60, sandwiched between two electrodes, has been used as the active layer for an organic solar cell. It delivered external quantum efficiencies up to 60% in the visible and 70% in the UV part of the spectrum. To unambiguously determine which ...
Vaccaro, S.
An antenna which combines solar cells and printed patches is presented. The antenna is designed so as to accommodate the solar cells that provide power to an MMIC amplifier. A 2×4 array which operates at the frequency of 3.76 GHz and has a bandwidth of 16% and gain of up ...
Belmant C - - 1999
Most human blood gammadelta T cells react without major histocompatibility complex restriction to small phosphorylated nonpeptide antigens (phosphoantigens) that are abundantly produced by mycobacteria and several other microbial pathogens. Although isopentenyl pyrophosphate has been identified as a mycobacterial antigen for gammadelta T cells, the structure of several other stimulating compounds ...
Nosanchuk J D - - 1999
Structures similar to the melanin "ghosts" of melanized cryptococcal cells were isolated from pigeon excreta contaminated with Cryptococcus neoformans, and their growth in pigeon excreta supported melanization. The results suggest that environmental C. neoformans cells are melanized and imply that initial infection may involve exposure to melanized cells.
Shah A - - 1999
The advantages and limitations of photovoltaic solar modules for energy generation are reviewed with their operation principles and physical efficiency limits. Although the main materials currently used or investigated and the associated fabrication technologies are individually described, emphasis is on silicon-based solar cells. Wafer-based crystalline silicon solar modules dominate in ...
Gass J D - - 1999
Poorly recognized by anatomists and pathologists is the cone-shaped zone of Müller cells that composes the central and inner part of the fovea centralis. The importance of these cells in the structural integrity of the macula, as a repository for xanthophyll, and in the pathogenesis of macular diseases, particularly regarding ...
Townsend S E - - 1999
B-cell development differs significantly from T-cell development in that negative selection of autoreactive B cells can occur in the same microenvironment in which productive immune responses begin. Here, Sarah Townsend and colleagues discuss how this 'growing up on the streets' might provide a mechanism that fills holes in the B-cell ...
Mullen, Robert L.
This application claims the benefit of Provisional Application Ser. No. 60/003,512, filed Sep. 7, 1995. Background: Cellular materials can be made to combine high strength to weight ratio, elastic resilience and energy absorbing properties. They are attractive for lightweight structures, packaging and insulating purposes. Nature provides an abundance of examples ...
Wülfing C - - 1999
Studies of T cell recognition have entered new territory now that some of the basic issues of genetics, biochemistry and structure have been addressed, at least in outline form. In the present work, the focus is on a new aspect of T cell recognition that goes beyond classical biochemistry to ...
Gerald E. Naresh,K. Darrell,L. ...
Assembly of the NASA Lewis Research Center Solar Regenerative Fuel Cell Facility has been completed and system testing has proceeded. This facility includes the integration of two 25 solar cell arrays, a 25 proton exchange membrane electrolysis unit, four 5 PEM fuel cells, high pressure hydrogen and oxygen storage vessels, ...
Neugebauer, H.,
Results of controlled degradation experiments performed with the individual components and with the actual mixture used in plastic solar cells are shown. A testing procedure for the stability and for degradation effects under illumination in controlled atmosphere using FTIR-ATR spectroscopy is presented. The method yields rapid information on the degradation ...
Ma Y F - - 1999
The polyamines, mainly putrescine (PU), spermidine (SPD), and spermine (SPM) (Fig. 1), are low molecular mass aliphatic amines that exist in all living organs, and play important roles in cell growth and differentiation (1). The intracellular concentrations in many cell types are in the submillimolar range, and the maximum increase ...
This document contains presentation materials of Toshiba Corporation including their presentation at Fuel cell seminar and ONSI users meeting.
Genschik P - - 1998
It is widely assumed that mitotic cyclins are rapidly degraded during anaphase, leading to the inactivation of the cell cycle-dependent protein kinase Cdc2 and allowing exit from mitosis. The proteolysis of mitotic cyclins is ubiquitin/26S proteasome mediated and requires the presence of the destruction box motif at the N terminus ...
Guo ZJ - - 1998
Treatment of soybean (Glycine max L. cv Williams 82) cell-suspension cultures with Pseudomonas syringae pv glycinea (Psg) harboring an avirulence gene (avrA) or with yeast elicitor resulted in an oxidative burst characterized by the accumulation of H2O2. This burst, and the resultant induction of glutathione S-transferase transcripts, occurred more rapidly ...
Carr P A - - 1998
Double immunofluorescence was utilized to determine whether Renshaw cells contain calbindin D28k immunoreactivity. Renshaw cells were identified by their characteristic expression patterns of gephyrin immunoreactivity in sections of rat and cat lumbar spinal cord. In the rat, all neurons classified as Renshaw cells (n = 487) also contained calbindin D28k-immunoreactivity, ...
Hornberg C - - 1998
Recent epidemiological studies in the United States and in Europe indicate, that the coarse fraction (PM-10) of airborne particulates, smaller than 10 microm and particularly the fine fraction (PM-2.5) smaller than 2.5 microm are responsible for adverse health effects, causing an increasing morbidity and mortality. Furthermore, an association was reported ...
Fleischer A - - 1998
Suspension-cultured Chenopodium album L. cells are capable of continuous, long-term growth on a boron-deficient medium. Compared with cultures grown with boron, these cultures contained more enlarged and detached cells, had increased turbidity due to the rupture of a small number of cells, and contained cells with an increased cell wall ...
Yoshida H - - 1998
Chemical carcinogens, such as chloroform and trichloroethylene, are present in drinking water in Japan. As these contaminants are believed to have a role in carcinogenesis, we examined if chloroform and trichloroethylene, as well as methylene chloride, xylene, benzene, and ethanol, have the ability to generate hydrogen peroxide (H(2)O(2)) in human ...
Ning Song,Marek Perkowski
The paper proposes a new layout-driven multi-level logic factorization methodology for regular arrays of two-input cells, that can find practical applications in fine-grain FPGA design, standard cell, gate matrix layout and sub-micron technologies. A new factorization algorithm for AND/OR/EXOR logic with multi-valued literals is introduced, that has application to minimization ...
Spiegel, Markus
This thesis deals with the bulk recombination of multicrystalline silicon solar cells. Bulk recombination of generated minority carriers is an important limiting factor for the efficiency of various mc-Si solar cells. The microwave induced remote hydrogen plasma (MIRHP) technique has been applied in this work to reduce the bulk recombination ...
Reis, I. E.
Mesh-structured emitter solar cells (MESC) with evaporated contacts have shown e fficiencies up to 22.7 %. For further simplification of the MESC cell the photol ithographically defined front contacts had been re-placed by screen-printed cont acts which were fired in a RTP (Rapid Thermal Processing) furnace. Efficiencies up to 13 ...
Hahne, P.
The purpose of this work was to study the suitability of pad printing (tampon printing) -an innovative gravure offset (indirect) printing technique. Pad printing offers the possibility of a simple, economic and high through-put manufacture of fine-line metallization below 50 µm on solar cells lowering the optical losses caused by ...
Tom Michiels
By means of the Cayley Trick the problem of enumerating all regular fine mixed subdivisions is reduced to enumerating all regular triangulations. The set of all regular triangulations is well-understood thanks to the bijection with the vertices of the secondary polytope. However, since we are only interested in the configurations ...
Inaka H
Fuel cells have always been one of the top priorities that was worked aggressively in the course of developing and promoting new energy technologies. The low emission (low NOx and SOx) and CO2 reduction caused by high electrical efficiency are effective for environmental protection. That's why Phosphoric Acid Fuel Cells ...
M. Spth,J. M. Kroon,P. ...
The working principle of a nano-crystalline dye sensitized solar cell (nc-DSC) of the Grtzel type depends on a working cycle consisting of dye excitation, electron injection into titanium dioxide and fast reduction of the oxidized dye by a redox couple. Continuous stability testing at Solaronix on glass/glass thermoplastic sealed nc-DSC ...
Paulson S L
The natural gas fuel cell, an energy technology that has seemingly been on the verge of a breakthrough for decades, has been generating a surprising amount of news lately. Compact and nearly silent, fuel cells can operate at extremely high efficiencies with little pollution. Because fuel is not burned, fuel ...
Hoffman P S - - 1997
Legionella pneumophila is an environmental micro-organism capable of producing an acute lobar pneumonia, commonly referred to as Legionnaires' disease, in susceptible humans. Legionellae are ubiquitous in aquatic environments, where they survive in biofilms or intracellularly in various protozoans. Susceptible humans become infected by breathing aerosols laden with the bacteria. The ...
Ohtake N - - 1997
Unusual histopathologic structures were observed in lobular panniculitis of a patient with Behçet's disease. These were polyp-like in shape and protruded into cavities made of lysed fat cells. Various stages of development were observed. To determine the origin of cells making up these structures, we applied various histochemical and immunohistochemical ...
Murata T - - 1997
A phragmosome (PS) is a transvacuolar aggregation of cytoplasm that develops in the plane of future cytokinesis and is found specifically in highly vacuolated cells. Although protonemal cells of Adiantum capillus-veneris L. usually do not form a PS, a PS-like structure developed at the site of a preprophase band (PPB) ...
Keppel E - - 1997
Recently, a cDNA was isolated from hydra with extensive homology to a mammalian and invertebrate gene which codes for a protein called laminin binding protein (LBP). In this paper we describe the protein expression of the hydra LBP in Escherichia coli. On SDS gels the recombinant hydra LBP displayed an ...
Kantor A B - - 1997
Previous studies conclude that the repertoire of B-1a (CD5+ B) cells is highly restricted. Studies here, which use FACS sorting and single-cell PCR methodology to develop an unbiased representation of the IgH repertoires of B-1a, B-1b, and conventional B cells from the peritoneal cavity, demonstrate that the B-1a cell repertoire ...
Lars Steinke
In this work multi quantum well (MQW) solar cell efficiency enhancement by up to 2.5% was achieved by multi-pass well absorption using patterned substrates: A theoretical and experimental investigation of anisotropically etched structures most suitable for light trapping in AlGaAs/GaAs MQW solar cell structures was carried through which established that ...
Yang L - - 1996
Recently, we have demonstrated that two cervical carcinoma cell lines with different cell differentiation stages possessed different nuclear matrix stability. The nuclear matrix of poorly differentiated cells was more stable than that of the more differentiated one. In the present study, we further quantified the nuclear matrix density after treatment ...
Li X - - 1996
Histone deacetylase inhibitors such as sodium butyrate or (R)-trichostatin A {(R)-TSA; 7- [4-(dimethylamino) phenyl]-N-hydroxy-4,6-dimethyl-7-oxo-2, 4-heptadienamide} have been reported to modulate the proliferation and differentiation of certain cell types. In this study, we analyzed the effects of these agents on KM12 human colon carcinoma (HCC) cells in culture. We found that ...
Claeys S - - 1996
The nasopharyngeal and palatine tonsil, two lymphoepithelial structures situated at the entrance of respiratory and gastrointestinal tracts, show striking similarity with lymphoid tissue of bronchus and gut (BALT, GALT). The information obtained by previous investigations in our laboratory on M-cells in the lymphoepithelium of the Peyer's patches (PP) served as ...
Mastrangelo A J - - 1996
Viruses carrying foreign genes are often used for the production of recombinant proteins in mammalian cells and other eukaryotic expression systems. Though high levels of gene expression are possible using viral vectors, the host cell generally responds to the infection by inducing apoptotic cell death within several days, abruptly ending ...
Hung W - - 1995
Hep3B and PLC/PRF/5 human hepatoma cells express epidermal growth factor (ECF) mRNA and secret this polypeptide growth factor into the culture medium. The production of EGF was inhibited by sodium butyrate in a dose-dependent manner. EGF receptor numbers in both cell lines were increased after treatment with butyrate for 2 ...
Abonyi A - - 1995
Plasmodium-like round cells without sections of flagella, round flagellar cells with dividing nucleus and binuclear flagellate round forms were represented from the log-phase of Trichomonas vaginalis cultures. The fine-structural characteristics of the round cells support the opinion that the cells without flagella as well as the round multinuclear flagellate cells ...
Oridate N - - 1995
Retinoids can inhibit the growth and modulate the differentiation of a variety of tumor cell types in vitro and in vivo. All-trans retinoic acid (ATRA) and N-(4-hydroxyphenyl)retinamide (4HPR) are currently being evaluated in clinical trials for their potential use in cancer chemoprevention and therapy. We compared the effects of these ...
Münzenberger B - - 1995
Soluble and cell-wall-bound phenolics in mycorrhizas of Larix decidua-Laccaria amethystea and in nonmycorrhizal fine roots of larch grown in sterile culture were analyzed by HPLC. The soluble phenolics p-hydroxybenzoylglucose, p-hydroxybenzoic acid glucoside, picein, catechin, and epicatechin were identified in nonmycorrhizal fine roots. The same phenolics also occurred in mycorrhizas, but ...
Soina V S - - 1995
The present report is the first contribution toward a comprehensive fine-structural study of microbial cells from permafrost. Prokaryotes with a variety of cell wall types demonstrate high stability of cell structure after long-term cryopreservation in frozen soils and sediments of the Arctic. The surface capsular layers that were a salient ...
Yang Y - - 1995
An antisense myc plasmid, containing a portion of exon 2 of the human c-myc gene, was cloned into the pDOL retroviral vector which was used to transfect human K562 erythroleukemia cells. All the retroviral vector transformants showed slower growth rates than the parental K562 cells. No detectable difference in the ...
Le Caër, G.
In space-filling 2D cellular structures with trivalent vertices and in which each cell is constrained to share at most one side with any cell and no side with itself, the maximum fraction of three-sided cells is produced by a decoration of vertices of any initial structure by three-sided cells. Fractal ...
Shah, A.
A case is developed for considering silicon as the prime medium-term candidate for semiconductor photovoltaic cells; the reason is based on other materials not being abundantly available, highly toxic, or very expensive. Crystalline silicon solar cells, however, have excellent efficiencies according to the data presented. Thus, thin-film silicon solar cells ...
Schadendorf D - - 1994
Malignant melanoma is a cancer with dramatically increasing incidence and mortality. Alternative approaches for therapy of disseminated malignant melanoma are urgently needed. In order to develop new alternatives for therapy of metastatic melanoma, we tested the biological activity of eight synthetic retinoids with high affinity and/or selectivity for the retinoic ...
Kitanaka S - - 1994
A new bitetrahydroanthracene derivative, torosaol-III, was isolated from the flowers of Cassia torosa Cav. along with physcion, 5,7'-physcionanthrone-physcion, 5,7'-biphyscion, torosanin-9,10-quinone, 5,7-dihydroxy-chromone, naringenin, and chrysoeriol. The structure of torosaol-III was established as 3,3'-4,4'-tetrahydro-3,3'8,8'9,9'-hexahydroxy-6,6'-dimethoxy-3,3'- dimethyl-1(2H),1'(2H)-5,7'-bianthracenone on the basis of spectral and chemical evidence. Dimeric tetrahydroanthracenes exhibited cytotoxic activity against KB cells in ...
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