hydrogen sensing and detection

... of hydrogen consumption (molecular hydrogen or equivalents) on the overall hydrogen yield are previously discussed by Dinamarca and Bakke [7] The formation of reduced products, biomass growth and ... Quantification of the impact of hydrogen consumers on the total hydrogen production and hydrogen yield cannot be determined exactly based on the data obtained in this study and literature data It can, ... a decrease in butyrate and hydrogen production and an increase in acetate and ethanol with increasing pH The authors agree that the results are reproducible, reversible and independent of the...

Ngày tải lên: 05/09/2013, 14:58

... interdisciplinary and incorporates Biology, Chemistry, Engineering, Medicine, and Physics Properties of Cancer Cells • Epidermal Growth Factor Receptor (EGFR) over expression and over activity ... necessary using nanoparticle targeting Uses in Detection Fluorescent Microscopy Nanoparticles can serve as dual detection devices for both magnetic resonance and microscopy Current Limitations Cancer ... or adding optic, magnetic, and fluorescent properties) and to treat Cancer (by Heat ablation, chemotherapy, gene therapy) -No human trials have been performed yet and human trials are still at...

Ngày tải lên: 15/02/2014, 05:20

... sense and quantify changes in environmental salinity and to activate appropriate compensatory responses Thus, euryhaline fishes represent excellent models to identify and understand elements and ... for small and slow osmolality changes and it depends on cell type-specific FEBS Journal 274 (2007) 5790–5798 ª 2007 The Authors Journal compilation ª 2007 FEBS 5791 Osmotic stress sensing and signaling ... including shark rectal gland [12] and teleost gill and opercular membrane [13] Full-length transcripts of CaSR have been cloned from gilthead sea bream (Sparus aurata) [13] and spiny dogfish (Squalus...

Ngày tải lên: 18/02/2014, 16:20

... Vision and Image Understanding, IEEE Trans Pattern Analysis and Machine Intelligence, IEEE Trans Medical Imaging, IEEE Trans Geoscience and Remote Sensing, Image and Vision Computing, and Pattern ... attest to the accuracy and integrity of this document Date: 2005.05.03 21:14:16 +08'00' 2-D and 3-D Image Registration 2-D and 3-D Image Registration for Medical, Remote Sensing, and Industrial Applications ... [268], Maintz and Viergever [256], Lester and Arridge [239], Pluim et al [311], and Zitova and Flusser [432] A book covering various landmark selection methods and their applications is due to Rohr...

Ngày tải lên: 06/03/2014, 12:20

... TECHNICAL ANNEX Hydrogen and fuel cell technologies and related challenges 25 ANNEX I High Level Group on Hydrogen and Fuel Cells Technologies 32 ANNEX II High Level Group on Hydrogen and Fuel Cells ... reservoir Why hydrogen and fuel cells? sustainable high quality of life is the basic driver for providing tion of hydrogen Regenerative hydrogen, and hydrogen pro- a clean, safe, reliable and secure ... ANNEX Hydrogen and fuel cell technologies and related challenges Hydrogen production Hydrogen can be produced in many different ways, using a board reformers, which extract hydrogen from gaseous and...

Ngày tải lên: 07/03/2014, 17:20

... the conference attendees and both the introduction and collection itself have been reviewed and approved by RAND Science and Technology RAND Forum on Hydrogen Technology and Policy A Conference ... commodity prices, and regulations Uses of Hydrogen Hydrogen is now used primarily to produce ammonia and methanol, and to upgrade and desulfurize petroleum products at refineries Hydrogen is also ... sector needs to better understand the prospects for hydrogen energy and the value of investments in hydrogen, and its investment decisions need to reflect an understanding of the risks associated...

Ngày tải lên: 15/03/2014, 22:20

... SENSORS, AND CATALYSTS 177 ACKNOWLEDGMENTS We thank Drs Y Zhang, G Cheng, and Y Lilach for their crucial contribution to this work and Profs H Metiu and E McFarland for helpful discussions and for ... combination of effects including enhanced hydrogen dissociation on titania defects and on the Pt electrodes (followed by hydrogen spill-over from the Pt) and hydrogen- induced modification of the Schottky ... nanostructures—nanowires and nanotubules—is currently in active ferment The range of materials and the scope for their applications as sensors and in other electronic and photonic devices is expanding at a...

Ngày tải lên: 19/03/2014, 16:47

... carbon monoxide, 5% ammonia and 1% oxygen at 290 8C Fig The sensitivity variation of a 20 V sample at 290 8C for (a) low hydrogen concentrations, and (b) 0.01 to 4% hydrogen concentrations nanotubes ... mechanism behind high hydrogen sensitivity Hence, we believe that the major process behind the interaction between the nanotubes and hydrogen is the chemisorption of the dissociated hydrogen on the ... titania surface [32] During chemisorption hydrogen acts as a surface state and a partial charge transfer takes place from hydrogen to the conduction band of titania This creates an electron accumulation...

Ngày tải lên: 19/03/2014, 16:48

... CO and CH w5x In general, the sensing characteristics, such as sensitivity and selectivity, of the polycrystalline sensor depend greatly on the microstructural properties of the polycrystal and ... concerned with the sensing characteristics related with fabrication methodology andror microstructure of the polycrystals In this paper, we have investigated the effects of binders on the sensing characteristics ... length given by LD s e kT 1r2 ž / Ž q2 n and the contacting shape of GB between grains w1,11x Here, k, T, and n are the Boltzman constant, absolute temperature, and the electron concentration in the...

Ngày tải lên: 20/03/2014, 13:04

... description of the sensing layer is presented in Fig There, the morphological features of the sensing layer are presented together with their corresponding energy bands representations and the corresponding ... layers, on the one hand, determined by the upper band bending at the metalsemiconductor contact due to the difference in work function between the two materials, and, on the other hand, 14 J Electroceram ... surface band bending of the resistance and, by that, decouple the geometric and surface effects For that we need to calculate eS In the case D >> x0 , one treats the situation in a planar p and semi-infinite...

Ngày tải lên: 20/03/2014, 13:04

... was observed by the detection of in situ activities using this peptide Results Screening of candidate substrate sequences from a random peptide library Phage clones in a random peptide library ... Q219), HQTQQK (loricrin, Q305), SSQQQKQ (SPR1, Q5 and Q7) and SQQVTQT (loricrin, Q215 and Q216) were determined as cross-linking sites by TGase and TGase 3, respectively However, differences in ... situ enzymatic activity in both human and mouse skin [16,19] These studies have provided new insight into the substrate specificity of Tgases and have expanded the range of application of the...

Ngày tải lên: 29/03/2014, 21:20

... delivery and distribution infrastructure (4) Efficient fuel cells and other energy conversion technologies that utilize hydrogen One of the promising candidates for hydrogen separation and purification ... economy’ is Iceland which has set a goal for a complete transition to hydrogen by 2030 In this scenario, hydrogen will be produced via Iceland’s geothermal and hydro resources and fed into fuel ... of Colloid and Interface Science 314 (2007) 589–603 Fig Hydrogen and helium permeance (with the feed of 1:1 hydrogen and helium mixture) through a 200 nm thick Pd/Ag membrane before and after...

Ngày tải lên: 13/05/2014, 01:01

... support, patience, and inspiration of our families and partners Thanks and love to Kate, Lily, Terri, and our parents, brother, and sisters To those we’ve overlooked, we apologize, and thank for their ... Mountford and Mike Mills and Linda Stone at Apple Computer, Joy Mountford (again) and Bob Adams at Interval Research, Sharleen Smith at USA Networks and Oxygen, Dana Plautz at Intel, Lili Cheng and ... computer’s copy and paste functions understands Computers reduce the barriers of time and space when playing with and rearranging ideas As a result, they better depict the changing and manifold...

Ngày tải lên: 03/06/2014, 01:24

Ngày tải lên: 04/06/2014, 16:03

... For j i example, assume Tc > Tc and channel i and j will be sensed every 10 and slots, respectively Then, the total sensing time for channel i and j are 10τ = 200 and 2τ = 40 (ms) Therefore, we ... chain; IS: intuitive sensing; IS-SA: intuitive sensing and selective access; POMDP: partially observable Markov decision process; PS: periodic sensing; PS-SA: periodic sensing and selective access; ... theoretical framework is proposed for jointly optimizing sensing and transmission time for each channel And then a spectrum selection and sensing scheduling method is proposed to exploit multiple...

Ngày tải lên: 21/06/2014, 03:20

... Incorporation and thermal stability of hydrogen in amorphous silicon and germanium J Non-Cryst Solids 1996, 198-200:40 22 Chou YP, Lee SC: Structural, optical, and electrical properties of hydrogenated ... 6.3 and 13.5 nm/min for a-Si and a-Ge, respectively Hydrogenation was carried out by letting hydrogen flow into the deposition chamber at flow rates of 0.4, 0.8 and 1.5 ml/min These values correspond ... the a-Si single layers hydrogenated at flow rates of 0.4, 0.8 and 1.5 ml/min (#4, #8 and #15, respectively, in the plot) (b) Total H concentration in a-Si (solid black line) and aGe (dash blue line)...

Ngày tải lên: 21/06/2014, 05:20

... design which is aware of MPEG-4 QoS requirements and PHY channel conditions AND and OR-rule cooperative sensing techniques are analyzed and the required sensing period for MAC layer scheduling is determined ... arrival Queue status and time slot allocation PRR based resource allocation and packet scheduling SNR and sensing time Adaptive modulation and channel coding PHY UWB channel shadowing and interference ... decide when to perform sensing and data transmission However, the sensing time is fixed to 20%−50% of the super frame size We argue that this allocated sensing period is too long and inappropriate...

Ngày tải lên: 21/06/2014, 11:20

... detector for narrowband sensing, the sensing time and detection thresholds for each narrowband detector are optimized jointly, which is different from the previous multiband joint detection framework ... sequence of narrowband bandpass filters to turn a wideband signal into narrow-band ones and sense each of them [41] However, a large number of RF components are needed for the whole band For more effective ... different spectrum sensing techniques have been used, such as matched filtering detection, energy detection, and feature detection [11] However, the performance of spectrum sensing is limited...

Ngày tải lên: 21/06/2014, 17:20

... L Macaire, N Vandenbroucke, and J.-G Postaire, “Color image segmentation by analysis of subset connectedness and color homogeneity properties,” Computer Vision and Image Understanding, vol 102, ... into two modes standing for both 17 the boat and its shadow on the water (see Figure 16(g)) However, the segmented images in Figures 16(d), 16(f), and 16(h) show that the sccf mode detection scheme ... Pattern Analysis and Machine Intelligence, vol 13, no 6, pp 583–598, 1991 [10] S Dai and Y.-J Zhang, “Color image segmentation with watershed on color histogram and Markov random fields,” in Proceedings...

Ngày tải lên: 21/06/2014, 22:20

... Remote Sensing and Modeling The GHK – 500 m (Blue, Green, Red, Nir, Mir, Fir, Xir) reflectance band were resampled fron 500 m to 250 m The Red and Nir bands were excluded and GQK (250 m) bands ... guidelines for operational remote sensing of ET, and a review of operational remote sensingbased energy balance models including SEBAL and METRIC, and specific challenges and insights for their application ... represent the current state of the art in ET modeling and remote sensing applications, and provide valuable insights and experiences of developers and appliers of the technologies that have been gained...

Ngày tải lên: 22/06/2014, 03:20