Literatura académica sobre el tema "610.704 4"
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Artículos de revistas sobre el tema "610.704 4"
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Wang, Hong, Run He Shi y Pu Dong Liu. "Theoretical Simulation and Feasibility Analysis of the Estimation of Crop Leaf Chlorophyll Using Narrow Band NDVI". Applied Mechanics and Materials 651-653 (septiembre de 2014): 317–22. http://dx.doi.org/10.4028/www.scientific.net/amm.651-653.317.
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Remote sensing technology is one of the best methods for the large-scale monitoring of chlorophyll in crops. This study analyzes the feasibility of estimating the contents of chlorophyll by means of narrow band normalized difference vegetation indices (NDVInb). The reflectance of the two bands forming the NDVInbis from simulations run on the PROSPECT model. A traversal of possible combinations of NDVInbare examined from 400 nm to 800 nm. Our results indicate that, at the leaf level, estimation of chlorophyll content can be identified in NDVInb. Ranges for these bands include: 1) 720-735 nm combined with 400-428 nm; 2) 550-615 nm, 692-701 nm or 707-715 nm combined with 400-432 nm or 462-496 nm; 3) 562-589 nm, 616-662 nm or 729-737 nm combined with 434-454 nm; and 4) 664-687 nm combined with 550-615 nm or 692-701 nm.
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Benevolo, Giulia, Alessandra Iurlo, Gabriele Gugliotta, Alessia Tieghi, Gianluca Gaidano, Giuseppe Tagariello, Bruno Martino et al. "Patients with Unexplained Thrombosis Require a Prompt Investigation to Search a Chronic Myeloproliferative Neoplasm (MPN), Even If Platelet Count Is <600x109/L. Analysis on 129 Patients from Registro Italiano Trombocitemie (RIT)". Blood 126, n.º 23 (3 de diciembre de 2015): 5181. http://dx.doi.org/10.1182/blood.v126.23.5181.5181.
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Abstract Background In patients with Ph-negative MPN, a prior thrombosis (PrTh) occurs in around 1/5 of cases, with variable platelet (PLT) count and variable distance from diagnosis. Objective To investigate the influence of PLT count at PrTh on diagnostic and therapeutic approach in MPN patients. Material and methods We evaluated 129 MPN patients from RIT, reclassified according to WHO 2008 criteria as ET (n70), initial-primary myelofibrosis (n29), early-PV (n10), and unclassifiable-MPN (n20). Results Patients, 60 males and 69 females, showed following PrTh: 91(71%) major arterial (37 AMI, 4 angina, 24 stroke, and 26 TIA); 12(9%) minor arterial; 22(17%) major venous (8 DVT, 7 splanchnic, 4 cerebral sinus, 3 pulmonary embolism); and 4(3%) minor venous events. PrTh occurred at a median distance of 4.1 months (range 0.1-118) from MPN diagnosis. This distance was >24 months in 21(16%) patients. At occurrence of PrTh, median age was 58 years. PLT count (x109/L) had a median value of 661 (range 150-2200), and was ≤450, 451-600, 601-700, 701-1000, and >1000 in 15(12%), 35(27%), 26(20%), 43(33%), and 10(8%) patients, respectively. Median white blood cell (WBC) count was 9.0 x 109/L and median hematocrit (HCT) value was 46% in males, and 41% in females. Median time (months) from PrTh to diagnosis of MPN was higher (p0.004) in patients with lower PLT count (x 109/L): ≤450 (50.2), 451-600 (11.7), 601-700 (2.7), 701-1000 (1.8), and >1000 (1.4). After occurrence of PrTh, all patients received conventional anti-thrombotic treatment, but in 7(5.4%) patients 9 recurrent thrombosis were reported before MPN diagnosis (11/100 pt-years). At MPN diagnosis, clonality was documented in 101(78%) patients (JAK2 V617F mutation in 96 cases, 74%). The age was >60 years in 61(47%) patients. PLT count (x109/L) had a median value of 720 (166-2440), and was ≤450 (n 7, 5%), 451-600 (n 21, 16%), 601-700 (n 28, 22%), 701-1000 (n 58, 45%), >1000 (n15, 12%). WBC count (109/L) had a median value of 8.9, and was >10 in 40 (31%) cases. Median HCT level (%) was 45.6 in males and 42.1 in females. Cardiovascular risk factors (CVRF), comorbidities and symptoms were documented in 103(80%), 97(75%), and 57(44%) cases, respectively. Thrombotic risk (IPSET-Th) was high in 97.5%, and intermediate in 2.5% of cases. All 129 patients received anti-thrombotic drugs (low dose aspirin in 95% of cases) and, immediately after the diagnosis, they started a cytoreductive treatment (hydroxycarbamide 89%, anagrelide 8%, interferon-alpha 3%). Patients with a PLT count (x109/L) at PrTh ≤600(n 50), as compared with those with a PLT count >600(n 79), showed a longer median time to the MPN diagnosis (16.7 vs 2.0 months, p<0.001). No significant difference was found in the rate of: arterial PrTh (80% vs 79.7%, p0.97); recurrence of thrombosis before the diagnosis (8% vs 4%, p0.69); JAK2 V617F mutation (80% vs 71%, p0.29); age >60 years (52% vs 44%, p0.39); CVRF (82%vs79%, p0.63); WBC >10 x109/L (23% vs 39%, p0.07); HCT high level [>47% in males, >44% in females](28% vs 36%, p0.37), and high thrombotic risk [IPSET-Th] (96%vs99%, p0.56). During follow-up (median 7.9 years) they showed a higher incidence of thrombosis recurrence (30%vs15%, p0.04; 4.5 vs 1.7/100 pt-y, p<0.01) Conclusion Time to MPN diagnosis was significantly longer in patients with PLT count (x109/L) at PrTh ≤600 vs >600, and this time to diagnosis was characterized by a not negligible thrombosis recurrence. Moreover, during follow-up they showed a higher incidence of thrombosis recurrence. This analysis strongly suggests that a PLT count <600 or even <450 x109/L, in patients with unexplained thrombosis, deserves the search of a probable MPN, in order to promptly start cytoreductive treatment in addition to a conventional anti-thrombotic therapy. Disclosures Passamonti: Novartis: Consultancy, Honoraria, Speakers Bureau. Vannucchi:Novartis: Membership on an entity's Board of Directors or advisory committees, Speakers Bureau; Novartis: Other: Research Funding paid to institution (University of Florence), Research Funding; Shire: Speakers Bureau; Baxalta: Membership on an entity's Board of Directors or advisory committees.
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Yu, Xue-qing, Shu-guang Yang, Han Li, Yang Xie, Jian-sheng Li y Pan Zhang. "Preliminary Study to Evaluate Three Different Treatments on Stable Chronic Obstructive Pulmonary Disease Patients Based on Markov Model". Evidence-Based Complementary and Alternative Medicine 2019 (17 de abril de 2019): 1–16. http://dx.doi.org/10.1155/2019/6478926.
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This study evaluates the costs and utilities of different treatment strategies for stable chronic obstructive pulmonary disease (COPD) patients based on Markov model and provides guidance for clinical decision and health policy making. Patients with stable COPD from four subcenters had been investigated. A Markov model with three states, namely, GOLD 1-2, GOLD 3-4, and death, was built using TreeAge Pro 2011 software. Cost-utility ratio (CUR) and incremental cost-utility ratio (ICUR) from forty Markov circles were applied to measuring the economics evaluation of three different treatments. A total of 236 stable COPD patients were randomly assigned into three groups, Western medicine group (79 cases), traditional Chinese medicine (TCM) group (79 cases), and combined group (78 cases). The results of Markov cohort simulation showed that the accumulative quality-adjusted life years (QALYs) of the three above groups per 100 000 people in 40 years were 1 702 773, 1 616 797, and 1 709 668 years, respectively, and the accumulative costs were 13 582 138 466, 1 207 904 113, and 14 656 607 371 Yuan, respectively. The CURs of the three groups were 87 235, 74 602, and 87 223 Yuan/QALY, respectively. ICURs of combined group were 8 707 and 41 705 Yuan as against Western medicine group and TCM group, respectively. Therefore, combined treatment has a lower cost, higher health output, and more socioeconomic benefits in the long run. Markov model is recommended to conduct health economics evaluation of different treatments for COPD.
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Halestrap, A. P. "Calcium-dependent opening of a non-specific pore in the mitochondrial inner membrane is inhibited at pH values below 7. Implications for the protective effect of low pH against chemical and hypoxic cell damage". Biochemical Journal 278, n.º 3 (15 de septiembre de 1991): 715–19. http://dx.doi.org/10.1042/bj2780715.
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1. The rate of opening of the Ca(2+)-induced non-specific, cyclosporin A-inhibited, pore of the mitochondrial inner membrane of rat heart and liver mitochondria at pH 6.0 was less than 10% of that at pH 7.4. 2. The effect could not be explained by inhibition of Ca2+ uptake into the mitochondria, or of the matrix peptidyl-prolyl cis-trans isomerase (PPIase), or of the Ca(2+)-induced conformational change of the adenine nucleotide translocase. 3. It is suggested that the proposed interaction of matrix PPIase with the ‘c’ conformation of the adenine nucleotide carrier in the presence of Ca2+ [Griffiths & Halestrap (1991) Biochem. J. 274, 611-614] is inhibited by low pH. 4. The relevance of this to the protective effect of low pH on hypoxic and chemical-induced cell damage is discussed.
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Kusevich, D. A., A. S. Avdeeva, V. V. Rybakova, N. V. Chichasova y E. L. Nasonov. "Clinical efficacy of the rituximab biosimilar Acellbia® 600 mg in patients with active rheumatoid arthritis in clinical practice". Rheumatology Science and Practice 56, n.º 6 (22 de enero de 2019): 703–8. http://dx.doi.org/10.14412/1995-4484-2018-703-708.
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Objective: to evaluate the clinical efficacy of the rituximab biosimilar Acellbia® at a dose of 600 mg intravenously at a 2-week interval in patients with active rheumatoid arthritis (RA) 12 and 24 weeks after initiation of treatment.Subjects and methods. Examinations were made in 20 active seropositive RA patients who had not been previously treated with biological agents (BAs), but received two infusions of the rituximab biosimilar Acellbia® at a dose of 600 mg intravenously at a 2-week interval during stable therapy with methotrexate (MT) and glucocorticoids (GCs). The European League Against Rheumatism (EULAR) response criteria (Disease Activity Score 28 (DAS28), Clinical Disease Activity Index (CDAI), and Simplified Disease Activity Index) and the American College of Rheumatology (ACR) criteria were used to evaluate the efficiency of Acellbia® therapy. Disease remission was identified by DAS28 and 2011 ACR/EULAR criteria. The safety profile (the frequency of all reported adverse events) corresponds to the data on the safety of rituximab (MabThera®).Results and discussion. At the time of inclusion, median DAS28 was 5.6 [4.9; 6.8], SDAI – 27.1 [23.0; 39.9], and CDAI – 26.6 [22.2; 37.0]. At week 12 after initiation of Acellbia® therapy, they decreased to 4.2 [3.24; 4.75], 14.4 [8.5; 20.7], and 13.2 [7.9; 19.0] respectively, which remained at 24-week follow-up (p<0.01). At week 12, the frequencies of ACR 20%, 50%, 70% improvements were 70, 55, and 5%; at week 24, these were 75, 45, and 15%, respectively. A good or moderate EULAR response at week 24 was observed in 25 and 60% of patients, respectively. At week 24, DAS28, SDAI, and CDAI remissions were achieved by 4 (20%), 2 (10%), and 1 (5%); low disease activity – by 4 (20%), 5 (25%), and 6 (30%) patients, respectively; high disease activity as measured by SDAI and CDAI remained in 3 (15%) patients. Two patients (10%) met the 2011 ACR/EULAR remission criteria at 24 weeks.Conclusion. The rituximab biosimilar Acellbia® 600 mg used in patients with active seropositive RA is clinically effective and comparable in the safety profile as shown in investigations of the brand-name MabThera® (F. Hoffman-La Roche Ltd., Switzerland) at a low dose (500 mg), as well as the first BA.
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Leary, N. O., A. Pembroke y P. F. Duggan. "Measuring Albumin and Calcium in Serum in a Dual Test with the Hitachi 704". Clinical Chemistry 38, n.º 7 (1 de julio de 1992): 1342–45. http://dx.doi.org/10.1093/clinchem/38.7.1342.
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Abstract We describe a method for simultaneously determining albumin, by using bromcresol purple, and calcium, by using Arsenazo III, in the same analytical cuvette on the Hitachi 704. Both assays agree well with accepted procedures. The standard curves for the albumin and calcium assays are linear from 0 to 60 g/L and 0 to 5.0 mmol/L, respectively. Calibration is stable for 7 days with use of open reagent in the instrument. Both assays are unaffected by hemoglobin less than or equal to 5 g/L and Intralipid less than or equal to 4 g/L; calcium is unaffected by bilirubin less than or equal to 600 mumol/L.
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DeFrank, Joseph y Charles R. Clement. "Weed Control in Pejibaye Heart of Palm Plantations in Hawaii". HortScience 30, n.º 6 (octubre de 1995): 1215–16. http://dx.doi.org/10.21273/hortsci.30.6.1215.
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Pejibaye (Bactris gasipaes Kunth, Palmae) is being evaluated for production of fresh heart of palm in Hawaii. Precocity, yields, and weed control were evaluated in response to woven black polypropylene mat (control), oryzalin, oxyfluorfen, and paraquat. Control plots attained 100% of plants harvested by 26 months, followed by oxyfluorfen (97.5%), oryzalin (77.5%), and paraquat (60%). Estimated heart of palm yields (3731 plants/ha) were similar with oxyfluorfen 1.2 kg a.i./ha (707 kg·ha–1), polypropylene mat (612 kg·ha–1), oxyfluorfen 0.6 kg a.i./ha (600 kg·ha–1), and oryzalin 4.5 kg a.i./ha (478 kg·ha–1). Based on precocity, yields, and weed control efficiency, the performance rating of these weed control treatments was mat ≈ oxyfluorfen > oryzalin > paraquat. Chemical names used: 4-(dipropylamino)-3,5-dinitrobenzenesulfonamide (oryzalin); 2-chloro-1-(3-ethoxy-4-nitrophenoxy)-4-(trifluoromethyl)benzene (oxyfluorfen); 1,1′-dimethyl-4-4′-bibyridinium ion (paraquat).
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Reese, S. J., D. S. Smith, R. E. Rupp, J. K. Wright, A. R. Khanolkar, R. N. Wright y D. H. Hurley. "Elevated-Temperature Elastic Properties of Alloys 709 and 617 Measured by Laser Ultrasound". Journal of Materials Engineering and Performance 30, n.º 2 (11 de enero de 2021): 1513–20. http://dx.doi.org/10.1007/s11665-020-05430-4.
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Hadidjija, Kusno y Agung Rasmito. "4 Pengaruh Katalisator Terhadap Proses Hidrolisa Kulit Pisang Menjadi Glukosa". Jurnal Riset Teknik 1, n.º 2 (30 de diciembre de 2021): 19–21. http://dx.doi.org/10.54980/jer.v1i2.167.
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Kulit pisang merupakan bahan buangan yang cukup banyak jumlahnya dan selama ini masih belum dimanfaatkan secara maksimal.komposisi terbanyak kulit pisang adalah 69.9 % dan karbohidrat 18.5 %, sebenarnya dapat dimanfaatkan sehingga dihasilkan produk yang lebih bernilai ekonomis. Salah satu manfaatnya adalah mengubah kulit pisang menjadi glukosa melalui proses hidrolisa. Penelitian ini bertujuan untuk mengetahui pengaruh katalisator dan suhu operasi untuk mendapatkan glukosa dari hasil hidrolisa pati kulit pisanng. Dan untuk mendapatkan hasil hidrolisa (glukosa) terbesar dari variable yang ada. Kulit pisang seberat 100g dihancurkan menggunakan blender dengan menambahkan air sebanyak 250mL untuk membuat bubur kulit pisang. Setelah itu, memanaskan bubur kulit pisang dengan suhu operasi 600°C, 700°C, 800°C dan 900°C selama 2,5 jam dan kecepatan pengadukan 700 rpm. Sebelumnya, menambahkan katalisator HCl dengan konsentrasi 5%, 10%, 15% dan 20% pada bubur kulit pisang. Kemudian mendinginkannya dan menyaringnya untuk diambil filtratnya. Kemudian menganalisa filtrat dengan menggunakan spektrofotometri dengan pereaksi anthron. Sehingga dari penelitian ini diperoleh konsentrasi terbesar glukosa yaitu 818 mg/L yang diperoleh dari penambahan konsentrasi 20% katalis HCl pada suhu 600°C
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Yang, Kaixuan, Jian Wang, Jianli Miao, Jian Zhang y Fujun Zhang. "All-polymer photodetectors with photomultiplication". Journal of Materials Chemistry C 7, n.º 31 (2019): 9633–40. http://dx.doi.org/10.1039/c9tc02751c.
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Photomultiplication type all-polymer photodetectors were fabricated with P3HT : PZ1 (100 : 4, wt/wt) as active layers. The EQE values are 46 700% and 31 700% at 375 nm and 615 nm under a −20 V bias, respectively.
Tesis sobre el tema "610.704 4"
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Hofmann, Peter [Verfasser] y Nils [Akademischer Betreuer] Urbach. "Designing and Managing Artificial Intelligence-Enabled Information Systems / Peter Hofmann ; Betreuer: Nils Urbach". Bayreuth : Universität Bayreuth, 2021. http://nbn-resolving.de/urn:nbn:de:bvb:703-epub-5763-4.
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Wiedmann, Peter C. Verfasser] y Stefan [Akademischer Betreuer] [Jablonski. "Agiles Geschäftsprozessmanagement auf Basis gebrauchssprachlicher Modellierung / Peter C. Wiedmann ; Betreuer: Stefan Jablonski". Bayreuth : Universität Bayreuth, 2017. http://nbn-resolving.de/urn:nbn:de:bvb:703-epub-3257-4.
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Marciniak, Jana [Verfasser]. "Investigation of Heat Shock Protein 70 and Toll-like Receptor 4 functions during inflammation reaction by mechanical compression in human periodontal ligament cells / Jana Marciniak". Bonn : Universitäts- und Landesbibliothek Bonn, 2021. http://d-nb.info/1239729901/34.
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Godehardt, Katja [Verfasser], Deniz [Gutachter] Kececioglu y Torsten Thomas [Gutachter] Bauer. "Referenzwerte gesunder Probanden für ventilatorische Parameter und das Atemäquivalent in Ruhe und unter Belastung auf dem Laufbandergometer im Alter von 4 bis 74 Jahren / Katja Godehardt ; Gutachter: Deniz Kececioglu, Torsten Thomas Bauer ; Medizinische Fakultät". Bochum : Ruhr-Universität Bochum, 2018. http://d-nb.info/115430812X/34.
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Trusheim, Heidi. "Untersuchungen zur GLP-1-(Glucagon-like peptide-1) induzierten Signaltransduktion und Genexpression an der pankreatischen ß-Zellinie INS-1". Doctoral thesis, 2000. https://repositorium.ub.uni-osnabrueck.de/handle/urn:nbn:de:gbv:700-2000091127.
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Das Darmhormon Glucagon-like peptide-1 (GLP-1) ist ein vielversprechendes Therapeutikum in der Behandlung des Typ 2-Diabetes. Allerdings liegen nur wenige Daten über die molekulare Wirkung des Hormons vor. Daher wurden die intrazellulären Effekte, die GLP-1-induzierten Signaltransduktion und Genexpression am Beispiel der pankreatischen ß-Zellinie INS-1 untersucht. In den INS-1-Zellen zeigte sich nach einer GLP-1-Stimulation eine zeit-, dosis- und glukose-abhängige Phosphorylierung von ERK1/2 bzw. der Aktivierung der Transkriptionsfaktoren Elk-1 und CREB. Während GLP-1 die beiden Signalmoleküle bereits nach wenigen Minuten transient aktivierte, führte Glukose zu einer verzögerten, aber anhaltenden Aktivierung. Beide Stimulanzien gemeinsam bewirkten eine synergistische Aktivierung von ERK1/2 und CREB. Sowohl am Mechanismus der glukose- als auch GLP-1-induzierten Aktivierung sind Ca2[plus]-regulierte Signalprozesse in antagonistischer Weise involviert. So führte die Inhibition von CaM-Kinasen und der intrazellulären Ca2[plus]-Erhöhung zu einer Reduktion der GLP-1- und glukosestimulierten ERK1/2-Phosphorylierung, die induzierte Aktivierung von CREB wurde leicht verstärkt. Die Inhibition der PKA und MEK ließen die Rückschlüsse zu, daß die Aktivie-rung der MAPK-Kaskade teilweise durch die PKA vermittelt wird und eine Wechselwirkung zwischen den Kaskaden existiert. Insbesondere die Induktion der frühen Gene junB, c-fos, nur-77 und zif268, die mit der GLP-1-induzierten ERK1/2- und CREB-Phosphorylierung korrelierten, belegten, daß GLP-1 einen Teil seiner Wirkung über diese Signalwege vermittelt. Die Glukosewirkung hinsichtlich der IEG-Induktion war gering. Beide Stimuli gemeinsam führten analog zum synergistischen Effekt auf signaltransduktorischer Ebene zu einer gesteigerten und verlängerten IEG-Expression, die somit die physiologische Bedeutung von GLP-1 als Glukosekompetenzfaktor unterstrichen.
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Wilken, Volker. "Kleinskalige Magnetfelder der Sonne und ihr Einfluß auf Chromosphäre, Übergangszone und Korona". 2001. http://hdl.handle.net/11858/00-1735-0000-0006-B43B-4.
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Halbe, Johannes. "Governance of Transformations towards Sustainable Water, Food and Energy Supply Systems - Facilitating Sustainability Innovations through Multi-Level Learning Processes". Doctoral thesis, 2017. https://repositorium.ub.uni-osnabrueck.de/handle/urn:nbn:de:gbv:700-2017022715609.
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A fundamental change in societal values and economic structures is required to address increasing pressures on ecosystems and natural resources. Transition research has developed in the last decades to analyze the co-dynamics of technological, institutional, social and economic elements in the provision of key functions such as energy, water and food supply. This doctoral dissertation provides conceptual and methodological contributions to the pro-active governance of sustainability transitions. Three research gaps are identified that are addressed in this dissertation. First, a comprehensive conceptualization of learning in sustainability transitions is currently missing that comprises learning at multiple societal levels (ranging from individuals to policy-actors). Learning concepts are often not explicitly discussed in transition research even though learning is considered as fundamental for innovation processes, niche formation and development as well as breakthrough and diffusion of innovations. Second, methods for the analysis and design of transition governance processes are lacking that specify case-specific intervention points and roles of actors in the implementation of innovations. Third, participatory modeling approaches are only applied to a limited extent in transition research despite a high potential for supporting communication and learning.
The conceptualization of multi-level learning developed in this doctoral research conceptualizes learning at different societal levels as specific learning contexts ranging from individual and group contexts to organizational and policy contexts. The conceptual framework further differentiates between learning processes, intensity, objects, outcomes, subjects and factors, allowing for a more detailed analysis of learning within and across learning contexts. Thus, learning contexts can be linked by processes that involve actors from different learning contexts (e.g., community groups and policy-makers), as well as exchanges of physical aspects, institutions and knowledge (in the form of ‘learning factors’). This research has also provided a classification of model uses in transition research that supports a purposeful discussion of the opportunities of modeling and promising future research directions.
The methodology developed in this doctoral research aims at the analysis and design of transition governance processes by specifying the various opportunities to contribute to sustainability transitions through purposeful action at different societal levels, as well as related roles of stakeholders in implementing such processes of change. The methodology combines different streams of previous research: 1) a participatory modeling approach to identify problem perceptions, case-specific sustainability innovations as well as related implementation barriers, drivers and responsibilities; 2) a systematic review to identify supportive and impeding learning factors from the general literature that can complement case-specific factors; and 3) a method for the analysis and design of case-specific transition governance processes. Three case studies in Canada (topic: sustainable food systems), Cyprus (water-energy-food nexus) and Germany (sustainable heating supply) have been selected to test and iteratively develop the methodology described above.
The results for each case study reveal that there are learning objects (i.e., learning requirements) in all learning contexts, which underscores the importance of multi-level learning in sustainability transitions, ranging from the individual to the group, organizational and policy levels. Actors have various opportunities to actively facilitate societal transformations towards sustainable development either directly through actions at their particular societal levels (i.e., context-internal learning) or indirectly through actions that influence learning at other societal levels. In fact, most of the learning factors require cooperation across learning contexts during the implementation process. The comparing of learning factors across case studies underline the importance of several factor categories, such as ‘physical a ‘disturbance or crisis’, ‘information and knowledge’. Of the 206 factors identified by stakeholders, 40 factors are case-specific and not contained in the general, review-based factor list. This underscores the value of participatory research, as general, top-down analyses might have overlooked these case-specific factors.
The methodology presented in this dissertation allows for the identification and analysis of case-specific intervention points for sustainability transitions at multiple societal levels. The methodology furthermore permits the analysis of interplay between individual, group, organizational and policy actions, which is a first step towards their coordination. The focus on sustainability innovations links the broad topic of sustainability transitions to a set of opportunities for practical interventions and overcoming their implementation barriers. The methodology presented allows for the analysis and design of these interlinkages between learning contexts. While the methodology cannot provide any ‘silver bullets’ for inducing sustainability transitions, it is flexible enough to identify an appropriate abstraction level for analyzing and designing transition governance processes. The methodology developed in this doctoral research also provides several contributions for the development of participatory modeling methods in transition research. Thus, the participatory method supports an integrated analysis of barriers and drivers of sustainability innovations, and allows application in practice and education.
The concepts and methods developed in this research project allow for reflection on transition governance processes from a systemic viewpoint. Experiences in the case studies underline the applicability of the concepts and methods developed for the analysis of case-specific transition governance processes. Despite substantial differences in the geographic location, culture and topics addressed, all case studies include promising sustainability innovations and the engagement of multiple actors in their implementation. The diversity and multitude of initiatives in the case study regions provides an optimistic outlook on future opportunities for large-scale sustainability transitions.
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Vollbrecht, Rüdiger Dr. "Postglazialer Anstieg des Meeresspiegels, Paläoklima und Hydrographie, aufgezeichnet in Sedimenten der Bermuda inshore waters". 1997. http://hdl.handle.net/11858/00-1735-0000-0006-B35B-4.
Texto completoLibros sobre el tema "610.704 4"
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Богомоленко, В. В. 20 век: по волнам моей памяти. Одесса: Экология, 2017.
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Teresa, Mlawer, ed. Comenoches. New York: Arthur A. Levine Books, 2004.
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ill, Turk Evan, ed. Muddy: The story of blues legend Muddy Waters. New York: Atheneum, 2016.
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McGhee, Alison. Only a witch can fly: A picture book. New York: Feiwel and Friends, 2009.
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ill, Say Allen, ed. The boy of the three-year nap. Boston: Houghton Mifflin, 1988.
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ill, Duvoisin Roger 1900, ed. White snow, bright snow. New York: Mulberry Books, 1988.
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1900-1980, Duvoisin Roger, ed. White snow, bright snow. New York: Scholastic, 1988.
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Allsburg, Chris Van. Jumanji. [London]: Andersen, 2012.
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Allsburg, Chris Van. Tian ling ling. Taibei Shi: Shang yi wen hua shi yeh gu fen yu xian gong si, 1995.
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DiCamillo, Kate. Because of Winn-Dixie. New York: Scholastic, 2000.
Buscar texto completoCapítulos de libros sobre el tema "610.704 4"
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Mahdi, Amira y Elke Schilling. "»Einfach mal reden« gegen Einsamkeit". En Kulturen der Gesellschaft, 309–16. Bielefeld, Germany: transcript Verlag, 2022. http://dx.doi.org/10.14361/9783839463505-017.
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Amira Mahdi und Elke Schilling beschreiben in ihrem Beitrag »Einfach mal reden« gegen Einsamkeit. Entlastende Telefongespräche für alle ab 60 Jahren das dreistufige Kontakt- und Hilfsangebot von Silbernetz für ältere Menschen ab 60 Jahren. Sie berichten von Beispielen aus der täglichen Praxis des Silbertelefons, das unter 0800 4 70 80 90 täglich von 8:00 bis 22:00 Uhr bundesweit anonym, vertraulich und kostenfrei erreichbar ist.
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Karunananda, Dayani, Ramya Ranathunga y Wathsala Abeysinghe. "60Co gamma irradiation-induced mutation in vegetatively propagated Philodendron erubescens 'Gold'." En Mutation breeding, genetic diversity and crop adaptation to climate change, 386–98. Wallingford: CABI, 2021. http://dx.doi.org/10.1079/9781789249095.0040.
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Abstract Philodendron erubescens 'Gold', an ornamental plant and a popular climber with brilliant greenish yellow leaves, is used in indoor gardening and landscaping. It is commonly propagated through vegetative cuttings, thus incorporation of new traits through conventional breeding is impracticable. As commercial floriculture always demands novel varieties, this study was carried out to induce mutation in P. erubescens 'Gold' leaves using gamma- ray irradiation. Rooted cuttings (n = 200) of P. erubescens 'Gold' were subjected to 70 Gy, 100 Gy and 150 Gy gamma-rays and recovered on a propagator. Surviving shoots were transferred to pots. Regenerated shoots were multiplied vegetatively and ten M1 lines were maintained as M1-1 to M1-10 for 12 generations (M1V12) to evaluate growth and morphological variations along with their genetic stability. Of all 70 Gy and 100 Gy treated cuttings, 24 and two, respectively, survived after 6 months. Most of the irradiated plants had lost regeneration ability except for two M1 plants, which also showed comparatively reduced growth (one leaf in 45 days). Only one regenerated M1 plant showed morphological variation in its leaves and it was multiplied and maintained as lines. Several variations, including characteristics of leaves (shape, size, colour), stems (internodal length and branching) and plant stature, were observed among M1 lines and in subsequent vegetative generations. Leaves had three different colour patches, but neither the colour nor its distribution pattern was uniform or stable. The M1-4 line showed the highest stability of colour distribution in leaves; the colour composition of its leaves ranged as 0-10% dark bluish green, 60-90% strong yellow green and 10-30% brilliant greenish yellow throughout the 12 generations. This study demonstrates that gamma irradiated P. erubescens 'Gold' line M1-4 can be a promising mutant to develop as a new Philodendron cultivar.
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Gomez-Pando, Luz, Jesus Bernardo-Rojas, Denisse Deza-Montoya, Martha Ibañez-Tremolada y Enrique Aguilar-Castellanos. "Mutation induction to improve quinoa (Chenopodium quinoa) resistance to downy mildew (Peronospora variabilis)." En Mutation breeding, genetic diversity and crop adaptation to climate change, 194–202. Wallingford: CABI, 2021. http://dx.doi.org/10.1079/9781789249095.0019.
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Abstract Quinoa is an important crop due to its nutritional characteristics (better than cereals) and its tolerance to abiotic stresses. However, various factors such as high susceptibility to diseases, especially downy mildew caused by Peronospora variabilis, limit its agricultural performance. Genetic improvement of quinoa could reduce the need to use fungicides for this crop and maintain the organic quality of Peruvian production in small-scale farms. Seeds of var. 'Amarilla Marangani', irradiated with 150 and 250 Gy of gamma-rays (60Co), were evaluated in two experimental locations in Peru: coastland at La Molina and highland at Huancayo. Resistance to downy mildew and other agricultural traits in the M3 and M4 generations was studied. In both locations, downy mildew was observed in susceptible plants under natural infection, from the seedling stage to plant maturity. At the coastland site, six mutants with 30% leaf infection were obtained in the progeny of plants exposed to 150 Gy. Five additional mutants with 40% leaf infection were found in the progeny of plants exposed to 250 Gy. In the highland trial, only seven lines were identified with 30% severity (foliar area with symptoms) among the plants from the 150 Gy experiment. The parent materials showed 70-80% disease severity. Mutant lines with quantitative resistance and tolerance to downy mildew, high yield potential, reduced duration, shorter plant height, altered inflorescence shape and grain colour mutations were selected from both doses. This study showed that quantitative resistance and tolerance to downy mildew could be obtained in quinoa and this resulted in increased grain yields.
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Vigne, Jean‑Denis, Yodrik Franel, François Briois y Jean Guilaine. "Sector F, building 800 and other evidence of occupation on the upper terrace". En Klimonas, 103–27. Paris: CNRS Éditions, 2024. http://dx.doi.org/10.4000/129ka.
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This chapter presents evidence of the extension of the PPNA village on the upper Klimonas terrace, in particular, building B800, located at the western end. This building, with a circular base with a diameter of 6 m, was dug into the slope but not buried. It was surrounded by a thick earth wall set in a foundation trench. On the north side, this wall leant against the vertical indentation in the substratum and the floor was covered with plaster. The sub-central post was inserted 70 cm into the ground, as were a dozen posts grouped in three sub-concentric arcs in the southern half of the building, indicating the presence of a roof. The four southernmost posts suggest the presence of an awning. The internal space was divided into two rooms, each with its own entrance, by an earthen partition wall. The northern space was roughly elliptical (5 x 4 m; 15.7 m²) and comprised a complex entrance system to the northeast. The central post, a large hearth slab and two opposing benches of about 3.5 m in length were organised around this space. The bench edges were carefully lined with planks or slabs and filled with building earth. Small pits containing remarkable objects were dug into the ground in this northern area, which can be interpreted as a residential space. The southern room was oblong, 8 m² large and only accessible through the southern door. It may have been used for storage purposes or craft activities. A comparison with the Communal building indicates that B800 was probably a residential rather than a communal building. The three test pits excavated between B800 and the road bordering the site to the east, revealed the remains of at least seven PPNA buildings, suggesting that many buildings were located on a large part of the more than 60 m long Klimonas upper terrace.
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Abdalla, Elgailani, Tarig Ahmed, Omar Bakhit, Yasir Gamar, Salih Elshaikh, Yasir Mohammed y Abdellatif Sulaiman And Hatim Mardi. "Groundnut mutants with end-of-season drought tolerance for the marginal dry lands of North Kordofan State, Sudan." En Mutation breeding, genetic diversity and crop adaptation to climate change, 243–57. Wallingford: CABI, 2021. http://dx.doi.org/10.1079/9781789249095.0025.
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Abstract Groundnut (Arachis hypogaea L.), produced in the traditional small-scale rainfed sector of Western Sudan, accounts for 80% of the total annual groundnut acreage, producing 70% of the total production. Low productivity of groundnut is a characteristic feature in North Kordofan State, which is characterized as the most vulnerable state to the impact of climate change. Terminal drought stress resulting from reduction in rainfall amount and distribution at the end of the season is the most deleterious drought period, as it coincides with groundnut pod filling and maturation periods. High and stable yields under subsistence farming conditions in North Kordofan State could be realized only by using adapted high-yielding, drought-tolerant genotypes. Mutation induction by gamma-rays of 200 and 300 Gy was utilized to irradiate 500 dry seeds of the Spanish-type groundnut genotypes, Barberton, Sodari, ICGV 89104, ICGV 86743, ICGV 86744 and ICG 221, aiming at increasing the chances of obtaining genotypes with the desired drought-tolerant traits. Mutants were selected from the M3 plants using visual morphological traits. Groundnut mutants at the M4 and M5 generations, advanced by single seed descent, were evaluated for end-of-season drought tolerance. A terminal drought period of 25 days was imposed after 60 days from planting, using a rainout shelter. Mutants that survived 25 days of terminal drought stress were further evaluated for agronomic performance under rainfed field conditions. The groundnut mutant, Barberton-b-30-3-B, produced 1024 kg/ha, a significantly higher mean pod yield over 12 seasons compared with 926 kg/ha for 'Gubeish', the widely grown released check cultivar, showing overall yield advantage of 11%. Under 5 years of participatory research, Barberton-b-30-3-B was ranked the best with yield increment of 21% over 'Gubeish' under the mother trials. The GGE biplot analysis for 12 and five seasons, respectively, showed that Barberton-b-30-3-B was stable and produced a good yield in both high and low rainfall situations. Hence, Barberton-b-30-3-B was found to be a suitable mutant for sustainable profitable yields in the marginal dry lands of North Kordofan State and was officially released as 'Tafra-1' by the National Variety Release Committee during its second meeting of April 2018.
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Tschiggfrei, Karin, Alexander Schächtele, Alwyn R. Fernandes, Jerzy Falandysz, Majorie van Duursen, Martin van den Berg y Rainer Malisch. "WHO- and UNEP-Coordinated Exposure Studies 2000–2019: Findings of Polychlorinated Naphthalenes". En Persistent Organic Pollutants in Human Milk, 383–414. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-34087-1_11.
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AbstractThe concentrations of polychlorinated naphthalenes (PCN) were determined in 40 pooled human milk samples from 39 countries covering all five of the United Nations regional groups. The samples were collected in the 2016–2019 exposure studies on persistent organic pollutants coordinated by the United Nations Environment Programme (UNEP).The median concentration of the sum of 26 PCN was 55 pg/g lipid (range 27 pg/g to 170 pg/g). Human milk from European countries showed considerably higher levels than those found in milk from countries in the African, Asia-Pacific, and Latin America/Caribbean regions. The most abundant congeners were the congener pairs PCN 52/60 and PCN 66/67 (inseparable by conventional chromatography) and to a lesser extent PCN 28/36, PCN 42, PCN 46, PCN 48, PCN 59, and PCN 69.Among other adverse biological effects, a critical response of many PCN congeners is dioxin-like toxicity. So, in addition to reporting concentrations of individual congeners, the toxic equivalents (TEQ) were also calculated in these samples, using two sets of relative effect potency (REP) values: a set that has been used in a number of human exposure studies and another set reported by Falandysz et al. (J Environ Sci Health, Part C: Environ Carcinogenesis Ecotoxicol Rev 32(3):239–272, 2014). The median PCN-TEQ concentration in human milk was 0.07 pg PCN-TEQ/g lipid (range 0.03 pg/g to 0.23 pg/g), when calculated using the human biomonitoring study REPs, and 0.03 pg PCN-TEQ/g lipid (range 0.01 pg/g to 0.10 pg/g), when calculated with other suggested REPs. The vast majority, about 90%, of this TEQ can be attributed to the PCN 66/67 congener pair. Individual REPs for PCN 66 and 67 from in vivo studies are quite different, but a chromatographic separation of these two congeners is not possible under routine GC conditions. Different approaches to estimate the uncertainties showed that the value of the REPs used is more important than the analytical problem to separate PCN 66 and PCN 67. PCN-TEQ based on the two sets of REPs differ approximately by a factor of 2.2, whereas the congener-specific determination was estimated to result in approximately 30% lower concentrations in comparison with the standard method.The assessment of PCN 66 and PCN 67 in order to obtain confirmed TEF would be most important for calculations of the dioxin-like toxicity of PCN, followed by PCN 69. Minor contributions to PCN-TEQ concentrations in human milk come from PCN 52/60, PCN 64/68, PCN 70, and PCN 73.On average, the contribution of PCN-TEQ to the cumulative TEQ (including the overall sum of toxic equivalents of PCDD, PCDF, and dioxin-like PCB [WHO2005-TEQ]) is between 1% and 2%, with a wider range of up to 5% for the 39 countries of this study. This is about an order of magnitude lower than the contribution of dioxin-like PCB to the cumulative TEQ (median 26%). In line with the observed higher total PCN concentrations, European countries also showed considerably higher levels of PCN-TEQ than found in the other regions. PCN-TEQ calculated with REPs used in human biomonitoring studies add on average about 2% to the cumulative TEQ of dioxin-like contaminants in Africa, the Asia-Pacific region, and Latin American and Caribbean countries and about 4% in European countries. The corresponding contribution of PCN-TEQ calculated using the other set would be 1% in non-European countries and 2% in European countries.
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Medina-Barón, Wilderson y Nora Elizabeth Pérez-Castillo. "Capítulo 4 Mamíferos". En La vida en un fragmento de bosque en las rocas: una muestra de la diversidad Andina en Bolívar, Santander, 203–34. Editorial UPTC, 2019. http://dx.doi.org/10.19053/978-958-660-331-7.4.
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Bygrave, Lee A. "Article 4(4). Profiling". En The EU General Data Protection Regulation (GDPR). Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780198826491.003.0010.
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Article 3(2)(b) (Monitoring of data subjects’ behaviour); Article 5 (Principles relating to processing of personal data); Article 6 (Legal grounds for processing of personal data); Article 8 (Conditions applicable to children’s consent in relation to information society services) (see also recital 38); Article 13(2)(f) (Information on the existence of automated decision-making, including profiling) (see also recital 60); Article 14(2)(g) (Information on the existence of automated decision-making, including profiling) (see also recital 60); Article 15(1)(h) (Right of access regarding automated decision-making, including profiling) (see also recital 63); Article 21 (Right to object) (see also recital 70); Article 22 (Automated decision-making, including profiling) (see also recital 71); Article 23 (Restrictions) (see also recital 73); Article 35(3)(a) (Data protection impact assessment) (see also recital 91); Article 47(2)(e) (Binding corporate rules); Article 70(1)(f) (EDPB guidelines on automated decisions based on profiling)/
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Georgieva, Ludmila. "Article 66 Urgency procedure". En The EU General Data Protection Regulation (GDPR). Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780198826491.003.0110.
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Article 4(21)–(22) (Definitions, supervisory authority and supervisory authority concerned); Article 60 (Cooperation between the lead supervisory authority and the other supervisory authorities concerned); Article 61 (Mutual assistance) (see too recital 133); Article 62 (Joint operations of supervisory authorities) (see too recital 134); Article 63 (Consistency mechanism) (see too recital 135); Article 64 (Opinion of the Board), Article 65 (Dispute resolution by the Board) (see too recital 136); Article 70 (Tasks of the Board) (see too recital 136).
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Feather, Leonard y Ira Gitler. "u". En The Biographical Encyclopedia of Jazz, 658–60. Oxford University PressNew York, NY, 1999. http://dx.doi.org/10.1093/oso/9780195074185.003.0021.
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Abstract Ulano, sam (solomon paul), dms; b. NYC, 8/12/20. Brother Ben pl. acdn.; a niece, Ellen Payne, is prof. concert vlnst. Stud. dms. and tympani at Harlem Sch. of Mus. 1935. Pl. w. army band in Hawaii and Japan ’42–6. Owned drm. shop in NYC ’46–70. Taught at NY Coll. of Mus. ’52–62. Wrote articles for Int’l Musician mag early ’50s and later for Big Bands mag. Pl. w. Bill Snyder ’56–60; Tony Parenti–Dick Wellstood at Metropole Café, NYC ’60–4; Sol Yaged ’64–75; own gp. at Gaslight club ’75–80; Max Kaminsky at Eddie Condon’s late ’70s; own qt. at Red Blazer ’87–92; Bob Cantwell’s NY Stompers fr. ’89. Ulano led a 9–pc. band, Sammy’s Double-Dixie Band, at the Red Blazer fr. ’92. Ulano is the subject of a biographical docu. film, Mr. Rhythm ’93. He has produced instructional material for dmrs., incl. books and videos, and publ. a magazine, Drum Files Revisited. Favs: Buddy Rich, Gene Krupa, Max Roach, Louis Bellson, Philly Joe Jones, Sid Catlett, Tony Briglia. Film: Mr. Rhythm. TV: Garry Moore, Ernie Kovacs, Steve Allen, Shari Lewis ’50s-’60s; Cerebral Palsy telethons w. Yaged ’67–70; Joe Franklin ’80s; David Letterman ’92. LPs: Lane; w. S. Yaged (Lane).
Actas de conferencias sobre el tema "610.704 4"
1
French, P. M. W. y J. R. Taylor. "Femtosecond Pulse Generation From Passively Mode-Locked Continuous Wave Dye Lasers 550 Nm - 700 Nm". En International Conference on Ultrafast Phenomena. Washington, D.C.: Optica Publishing Group, 1986. http://dx.doi.org/10.1364/up.1986.md6.
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The passively mode-locked continuous-wave dye laser has provided the source of the temporally shortest pulses since its inception in 1972(1). However, over the past fourteen years only a single combination of active/passive dye has been used, namely that of Rhodamine 6G and DODCI, consequently limiting the spectral extent of the system to ~ 610 - 640 nm. With optimised and dispersion compensated cavities being capable of producing pulses as short as 27fs(2), additional passively mode-locked cw dye lasers present an attractive and simple alternative to conţinuum generation (3) or external pulse compression of synchronously pumped dye lasers (4) as the source of frequency tunable femtosecond pulses.
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Pint, Bruce A. "Simulated Fireside Corrosion of Ni-Base Alloys in Oxy-Fired Conditions at 700°–800°C". En ASME 2014 Symposium on Elevated Temperature Application of Materials for Fossil, Nuclear, and Petrochemical Industries. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/etam2014-1023.
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One future objective for coal-fired power generation is to develop advanced ultrasupercritical (A-USC) boilers that incorporate oxy-firing to facilitate carbon capture. The steam condition goals of 760°C/34.5 MPa will require major materials changes throughout the boiler, including Ni-base alloys in the hottest sections. Solution hardened alloys such as 740 and 282 are needed to meet the strength requirements for 760°C. In previous work, little difference in corrosion rate was found between air- and oxy-firing for alloy 740 at 600°–800°C so laboratory testing focused on the “worst case” oxy-firing conditions with higher CO2, H2O and SO2 than expected with air-firing. Model alloys were made to investigate the roles of Cr, Al, Ti, Co and Mo on the fireside corrosion behavior. Exposures conducted for 500h at 700° and 800°C found that Al and Ti additions typically reduced the extent of attack under these conditions. As expected, the alloy Cr content had a substantial effect between 18 and 22%. Additions of 4% and 8%Mo to Ni-20Cr-(0-20)Co alloys increased the metal loss at 800°C and Ni-20Cr-20Co-(0-8%)Mo showed the highest attack at 700°C. The much higher attack of alloy 282 at 800°C can likely be attributed to its lower Cr content compared to alloy 740, which was developed to have excellent fireside corrosion resistance. Paper published with permission.
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Sparvoli, Marina, José F. D. Chubaci, Igor Abe, Alexandre Lopes, Inês Pereyra y Roberto K. Onmori. "Study of electrical characteristics of sensors based on indium tin oxynitride annealed in nitrogen atmosphere". En Latin America Optics and Photonics Conference. Washington, D.C.: Optica Publishing Group, 2022. http://dx.doi.org/10.1364/laop.2022.w1d.4.
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The objective of this study is the characterization of optoelectronic sensors based on thin films of ITON (Indium Tin Oxynitride) annealed at high temperatures (600, 700, 800, 900 and 1000°C) in a conventional furnace with a nitrogen atmosphere.
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PLOSILA, Pekka. "Hole expansion performance of a medium manganese advanced high-strength steel after hot rolling and intercritical annealing". En Metal Forming 2024, 358–67. Materials Research Forum LLC, 2024. http://dx.doi.org/10.21741/9781644903254-38.
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Abstract. This paper investigates the hole expansion behavior of a medium manganese advanced high-strength steel. The study began with vacuum-cast 0.3C–1Si–6Mn–2Al steel, which was subsequently laboratory hot-rolled to a thickness of 4 mm. Intercritical annealing treatments (IAT) were then carried out at temperatures of 650 °C and 700 °C to produce varying fractions of tempered martensite/ferrite and retained austenite (RA). Tensile tests were performed in the longitudinal direction, while hole expansion tests following ISO 16630 were conducted to assess the stretch-flangeability of the IAT materials. Test holes were prepared using punching and wire electrical discharge machining (W-EDM) to examine the effects of different edge conditions. Tensile strength of 1027 MPa and 911 MPa corresponding to a microstructure consisting of RA fraction of 7.5% and 43.3% were obtained at IA temperatures of 650 °C and 700 °C, respectively. Mean hole expansion ratios (HER) with punched holes were relatively low for the given strength levels (3% and 17% for IAT 650 °C and IAT 700 °C, respectively). W-EDM edge condition considerably improved HER but not as much as expected, potentially due to the high inhomogeneity of the microstructure. Further research on optimization of processing and microstructure is required to enhance the poor hole expansion performance of intercritically annealed medium manganese steels.
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Boiko, Yuri B. y Sergio Calixto. "Dry Photopolymer Films for Computer Generated Middle Infrared Focusing Elements Fabrication". En Difraction Optics: Design, Fabrication, and Applications. Washington, D.C.: Optica Publishing Group, 1992. http://dx.doi.org/10.1364/do.1992.mb4.
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Fabrication of the relief focusing elements are known to include the illumination of light sensitive materials through computer generated /l/ multy-grey-level amplitude mask with corresponding amplitude function of the focusing element /2,3/. In this report the use of dry photopolymer films (see /4/) is discussed. The photopolymer films based on the acrylamide (monomer), polyvinylalcohol (binder), methylene blue (sensitizer) and triethanolamine (initiator) were prepared according to the procedure previously described /4/. The exposure set up used is shown on the fig.1. The photosensitive layer provided sensitivity in the 600-700 nm spectral region, so as a light source 1 the 3 00 Watt halogen lamp with the reflector 2 was used. The filter 3 absorbed the heat radiation to prevent the amplitude mask damaging. The parallel beam at the output was formed by lenses 4. Polymer layer 7 was placed on the glass substrate 8. The direct contact of polymer layer and amplitude mask 6 was provided by glass substrate 5. Polymer layer thickness was 100 μm.
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Krasnoperov1, Andrey y Vladimir Zarudnyy. "Restoration of pastures in the conditions of the Kaliningrad region". En Multifunctional adaptive fodder production 29 (77). ru: Federal Williams Research Center of Forage Production and Agroecology, 2022. http://dx.doi.org/10.33814/mak-2022-29-77-26-31.
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On the production paddocks of the Mayskoye cattle farm of the Kaliningrad Research Institute of Agriculture from 1997 to 2000, over 4 years of use, the productivity of a superficially improved pasture due to the overseeding of perennial legumes and cereal grasses increased and amounted to 61.0–65.2 c/ha of dry matter, 70.2–73.7 GJ metabolic energy, 7.4–8.9 c/ha of digestible protein. Compared to grass stands, the energy intensity of nutrients decreased by 5–6 times when high doses of nitrogen were applied. The content of clovers in the pasture herbage remained at the level of 40–50%, which fully ensures the high productivity of legume-grass pasture herbage due to biological nitrogen and corresponds to the goal of the research.
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Sivalingam, Senthoorselvan, Stephan Gleis, Hartmut Spliethoff, Craig Hawthorne, Alexander Charitos y Guenter Scheffknecht. "Analysis and Comparison of Reactivity and CO2 Capture Capacity of Fresh Calcium-Based Sorbents and Samples From a Lab-Scale Dual Fluidized Bed Calcium Looping Facility". En ASME Turbo Expo 2010: Power for Land, Sea, and Air. ASMEDC, 2010. http://dx.doi.org/10.1115/gt2010-22192.
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Naturally occurring limestone and samples from a lab scale dual fluidized bed (DFB) calcium looping (CaL) test facility were analysed in a thermo gravimetric analyser (TGA). The reactivity of the samples evaluated at typical carbonation conditions prevailed in the carbonator was compared with raw samples. Carbonations were carried out at 600, 650 &700°C and 5, 10 &15 vol-% CO2 atmosphere using a custom designed sample holder that provided ideal conditions for solid gas contact in a TGA. The rate of carbonation and carbonation capacity of the samples were compared with respect to the following three categories: number of calcination-carbonation cycles, carbonation temperature and CO2 concentration. Notable differences in total conversion (XCaO) and the rates of conversions were observed between the raw and DFB samples in all three cases. It is suspected the much lower activity of the DFB sample is attributed to the differences in experimental conditions: ie., partial carbonation of the DFB particles, fast heating rate in the calciner and thus a rapid calcination reaction, and particle attrition in the CFB calciner riser. These harsh conditions lead sintering and thus a loss of surface area and reactivity. Sintered DFB samples showed low (nearly 1/3 of the raw samples) but stable conversions with increasing number of cycles. The sorbent taken from the DFB facility did not decrease with respect to carbonation rate or maximum conversion over 4 cycles whereas the fresh limestone changed significantly over 4 cycles. Hydration was used as an attempt to regenerate the lost capture capacity of partially carbonated DFB sample. Hydration of the sintered DFB sample was successful in increasing the maximum capture capacity in the fast reaction regime to values almost as high as that of a fresh sample in its first carbonation cycle. Although more investigation is required to investigate the effect of hydration on the CaO particle morphology, a process modification to enhance the CO2 capture efficiency of the carbonator via particle hydration was proposed.
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El-Genk, Mohamed S. y Jean-Michel Tournier. "Performance Comparison of VHTR Plants With Direct and Indirect Energy Conversion Cycles". En Fourth International Topical Meeting on High Temperature Reactor Technology. ASMEDC, 2008. http://dx.doi.org/10.1115/htr2008-58276.
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This paper compared the performance of very high temperature reactor (VHTR) plants with direct and indirect closed Brayton Cycles (CBCs) and investigated the effect of the molecular weight of the CBC working fluid on the number of stages in and the size of the single shaft turbomachines. The CBC working fluids considered are helium (4 g/mole) and He-Xe and He-N2 binary mixtures (15 g/mole). Also investigated are the effects of using LPC and HPC with inter-cooling, cooling the reactor pressure vessel with He bled off at the exit of the compressor, and changing the reactor exit temperature from 700°C to 950°C on the plant thermal efficiency, CBC pressure ratio and the number of stages in and size of the turbo-machines. Analyses are performed for reactor thermal power of 600 MW, shaft rotation speed of 3000 rpm, and IHX temperature pinch of 50 °C.
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Perry, M. D., T. Dittmire y D. Strickland. "Design and Performance of a Femtosecond Terawatt Cr: LiSrAlF6 Laser System". En International Conference on Ultrafast Phenomena. Washington, D.C.: Optica Publishing Group, 1992. http://dx.doi.org/10.1364/up.1992.tuc16.
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The new solid-state laser materials, Cr:LiCaAlF6 (Li:CAF)1 and its derivatives Cr:LiSrAlF6 (LiSAF)2 and Cr:LiSrGaF6 (LiSGAF)3, exhibit a combination of properties (a broad emission spectrum, long-lifetime of the upper lasing level, low thermal lensing, and low excited state absorption) which make it a unique source for tunable and/or short-pulse lasers. Lasing in LiCAF has been reported from 700 to 900 nm,1 while lasing in LiSAF has been demonstrated from 750 to 1000 nm.2 The broad emission bands of the LiCAF family are exceeded only by Ti:Sapphire (660-1100 nm)4 in commercially available solid-state laser materials. However, unlike Ti:Sapphire, these materials can be easily flashlamp-pumped due to the long storage time of the upper lasing level, 67 psec for LiSAF and 170 psec for LiCAF. Flashlamp pumped operation of a LiSAF laser was first reported by Stalder, et al, who achieved a slope efficiency of 5% for long-pulse operation.5
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Allen, David H., James W. Foulk y Kayleen L. E. Helms. "Observation and Prediction of Damage Evolution in Continuous Fiber Titanium Matrix Composites". En ASME 1997 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/imece1997-0655.
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Abstract Titanium matrix composites (TMC’s) are known to undergo significant environmental degradation at elevated temperatures. As a part of this research effort the TMC SCS-6/Ti-ß21S [0]4 has been fatigue tested at 482°C and 650°C. Additional specimens have been oxidized at 700°C and then fatigued at 482°C to failure. The life limiting physical mechanisms identified from the experiments are material inelasticity, surface embrittlement and subsequent surface cracking, fiber/matrix debonding, fiber-bridging, and eventual fiber failure. A model incorporating all of these physical phenomena has been developed in an ongoing effort by the authors. This model will be briefly presented herein. The model utilizes the finite element method coupled with models for material inelasticity, surface embrittlement. and crack propagation. Material inelasticity is predicted using Bodner’s unified viscoplastic model. Crack propagation is modeled via the inclusion of cohesive zone elements. Surface embrittlement is accounted for through the degradation of material properties. Both monotonic and fatigue loadings have been modeled at 482°C and 650°C for oxidized and unoxidized specimens. Results indicate that surface crack propagation rates are significantly slower when matrix viscoplasticity is included in the model instead of elasticity. Furthermore, surface cracking in degraded specimens enhances fiber stresses compared to undegraded specimens. This difference apparently causes premature failure of the degraded composite.
Informes sobre el tema "610.704 4"
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Melanie, Haupt y Hellweg Stefanie. Synthese des NFP-70-Verbundprojekts «Abfallmanagement als Beitrag zur Energiewende (wastEturn)». Swiss National Science Foundation (SNSF), enero de 2020. http://dx.doi.org/10.46446/publikation_nfp70_nfp71.2020.2.de.
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Im Abfall steckt sowohl direkt wie auch indirekt viel Energie. So werden in der Schweiz pro Jahr Siedlungsabfälle mit einem Energiegehalt von rund 60 Petajoule verbrannt. Die daraus direkt zurückgewonnene Energie deckt etwa 4 Prozent des Endenergiebedarfs. Das grösste Potenzial der Abfallwirtschaft liegt aber meist darin, beim Recycling sekundäre Rohstoffe zu gewinnen und so indirekt die energieintensive Produktion von primären Rohstoffen zu verhindern. Um den Beitrag der Abfallwirtschaft zur Energiewende zu optimieren, braucht es in einem ersten Schritt vor allem Verbesserungen hinsichtlich einer transparenten Dokumentation der Material- und Geldflüsse und darauf aufbauend eine energetische Priorisierung der verschiedenen Verwertungs- und Entsorgungswege. Als diejenigen Abfallfraktionen mit dem grössten Verbesserungspotenzial wurden Papier und Karton sowie Plastik identifiziert. Bei Papier und Karton lassen sich aufgrund der sehr grossen Mengen bedeutende Effekte erzielen. Gebrauchte Kunststoffe werden mit Ausnahme der PET-Getränkeflaschen bisher erst wenig getrennt gesammelt. Ein grosses Optimierungspotenzial wurde auch bei der Energieeffizienz der Verbrennungsanlagen identifiziert. Damit KVAs die entstehende Wärme wirkungsvoller nutzen können, müssen aber Abnehmer für Dampf und Wärmeenergie in ihrer Nähe angesiedelt sein. Ein entscheidender Erfolgsfaktor für einen Wandel hin zu einer energieeffizienten Abfallwirtschaft ist die Zusammenarbeit zwischen den vielen Akteuren der föderalistisch organisierten Branche. Diese muss sich zum einen vermehrt entlang der Wertschöpfungsketten organisieren. Zum anderen gilt es dabei aber auch, die Freiräume der föderalen Vielfalt zu nutzen, um unterschiedliche Lösungswege zu testen.
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Melanie, Haupt y Hellweg Stefanie. Synthesis of the NRP 70 joint project “Waste management to support the energy turnaround (wastEturn)”. Swiss National Science Foundation (SNSF), enero de 2020. http://dx.doi.org/10.46446/publication_nrp70_nrp71.2020.2.en.
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A great deal of energy can be sourced both directly and indirectly from waste. For example, municipal waste with an energy content of around 60 petajoules is incinerated in Switzerland every year. The energy recovered directly from this waste covers around 4 % of the Swiss energy demand. However, the greatest potential offered by waste management lies in the recovery of secondary raw materials during the recycling process, thus indirectly avoiding the energy-intensive production of primary raw materials. In order to optimise the contribution to the energy turnaround made by waste management, as a first step, improvements need to be made with respect to the transparent documentation of material and cash flows, in particular. On the basis of this, prioritisation according to the energy efficiency of various recycling and disposal channels is required. Paper and cardboard as well as plastic have been identified as the waste fractions with the greatest potential for improvement. In the case of paper and cardboard, the large quantities involved result in considerable impact. With the exception of PET drinks bottles, plastic waste is often not separately collected and therefore offers substantial improvement potential. Significant optimisation potential has also been identified with regard to the energy efficiency of incineration plants. To allow municipal solid waste incineration (MSWI) plants to use the heat they generate more effectively, however, consumers of the recovered steam and heat need to be located close by. A decisive success factor when transitioning towards an energy-efficient waste management system will be the cooperation between the many stakeholders of the federally organised sector. On the one hand, the sector needs to be increasingly organised along the value chains. On the other hand, however, there is also a need to utilise the freedom that comes with federal diversity in order to test different solutions.
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Melanie, Haupt y Hellweg Stefanie. Synthèse du projet conjoint du PNR 70 «Gestion des déchets pour soutenir la transition énergétique (wastEturn)». Swiss National Science Foundation (SNSF), enero de 2020. http://dx.doi.org/10.46446/publication_pnr70_pnr71.2020.2.fr.
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Les déchets renferment de grandes quantités d’énergie aussi bien directe qu’indirecte. Les déchets ménagers incinérés chaque année en Suisse représentent une valeur énergétique de quelque 60 pétajoules. L’énergie qui en est directement tirée couvre environ 4 % des besoins en énergie finale. Le plus gros potentiel en matière de gestion des déchets réside cependant dans le recyclage des matériaux, afin de leur donner une seconde vie et d’éviter ainsi indirectement la production énergivore de matières premières Pour optimiser la contribution de la gestion des déchets à la transition énergétique, il s’agit dans un premier temps d’améliorer la transparence et la documentation des flux de matières et d’argent et, sur cette base, de hiérarchiser l’impact énergétique des diverses solutions de valorisation et d’élimination. Les catégories de déchets identifiées comme ayant le plus grand potentiel d’amélioration sont le papier, le carton ainsi que le plastique. En ce qui concerne le papier et le carton, les énormes quantités traitées promettent des résultats significatifs. À l’exception des bouteilles en PET, le tri sélectif des plastiques usagés demeure encore peu développé. Un potentiel d’optimisation notable a également été identifié au niveau de l’efficacité énergétique des usines d’incinération. Pour permettre une utilisation plus efficace de la chaleur générée par les usines d’incinération d’ordures ménagère (UIOM), les consommateurs de vapeur et d’énergie thermique doivent toutefois être implantés à proximité. Un facteur décisif pour progresser vers une gestion des déchets plus efficace sur le plan énergétique est la collaboration entre les nombreux acteurs du secteur à l’échelle fédérale. Ceux-ci doivent d’une part mieux s’organiser tout au long de la chaîne de création de valeur et d’autre part tirer profit de la marge de manœuvre que procure la souplesse du fédéralisme pour tester différentes approches.
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Ley, Matt, Tom Baldvins, Hannah Pilkington, David Jones y Kelly Anderson. Vegetation classification and mapping project: Big Thicket National Preserve. National Park Service, 2024. http://dx.doi.org/10.36967/2299254.
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The Big Thicket National Preserve (BITH) vegetation inventory project classified and mapped vegetation within the administrative boundary and estimated thematic map accuracy quantitatively. National Park Service (NPS) Vegetation Mapping Inventory Program provided technical guidance. The overall process included initial planning and scoping, imagery procurement, vegetation classification field data collection, data analysis, imagery interpretation/classification, accuracy assessment (AA), and report writing and database development. Initial planning and scoping meetings took place during May, 2016 in Kountze, Texas where representatives gathered from BITH, the NPS Gulf Coast Inventory and Monitoring Network, and Colorado State University. The project acquired new 2014 orthoimagery (30-cm, 4-band (RGB and CIR)) from the Hexagon Imagery Program. Supplemental imagery for the interpretation phase included Texas Natural Resources Information System (TNRIS) 2015 50 cm leaf-off 4-band imagery from the Texas Orthoimagery Program (TOP), Farm Service Agency (FSA) 100-cm (2016) and 60 cm (2018) National Aerial Imagery Program (NAIP) imagery, and current and historical true-color Google Earth and Bing Maps imagery. In addition to aerial and satellite imagery, 2017 Neches River Basin Light Detection and Ranging (LiDAR) data was obtained from the United States Geological Survey (USGS) and TNRIS to analyze vegetation structure at BITH. The preliminary vegetation classification included 110 United States National Vegetation Classification (USNVC) associations. Existing vegetation and mapping data combined with vegetation plot data contributed to the final vegetation classification. Quantitative classification using hierarchical clustering and professional expertise was supported by vegetation data collected from 304 plots surveyed between 2016 and 2019 and 110 additional observation plots. The final vegetation classification includes 75 USNVC associations and 27 park special types including 80 forest and woodland, 7 shrubland, 12 herbaceous, and 3 sparse vegetation types. The final BITH map consists of 51 map classes. Land cover classes include five types: pasture / hay ground agricultural vegetation; non ? vegetated / barren land, borrow pit, cut bank; developed, open space; developed, low ? high intensity; and water. The 46 vegetation classes represent 102 associations or park specials. Of these, 75 represent natural vegetation associations within the USNVC, and 27 types represent unpublished park specials. Of the 46 vegetation map classes, 26 represent a single USNVC association/park special, 7 map classes contain two USNVC associations/park specials, 4 map classes contain three USNVC associations/park specials, and 9 map classes contain four or more USNVC associations/park specials. Forest and woodland types had an abundance of Pinus taeda, Liquidambar styraciflua, Ilex opaca, Ilex vomitoria, Quercus nigra, and Vitis rotundifolia. Shrubland types were dominated by Pinus taeda, Ilex vomitoria, Triadica sebifera, Liquidambar styraciflua, and/or Callicarpa americana. Herbaceous types had an abundance of Zizaniopsis miliacea, Juncus effusus, Panicum virgatum, and/or Saccharum giganteum. The final BITH vegetation map consists of 7,271 polygons totaling 45,771.8 ha (113,104.6 ac). Mean polygon size is 6.3 ha (15.6 ac). Of the total area, 43,314.4 ha (107,032.2 ac) or 94.6% represent natural or ruderal vegetation. Developed areas such as roads, parking lots, and campgrounds comprise 421.9 ha (1,042.5 ac) or 0.9% of the total. Open water accounts for approximately 2,034.9 ha (5,028.3 ac) or 4.4% of the total mapped area. Within the natural or ruderal vegetation types, forest and woodland types were the most extensive at 43,022.19 ha (106,310.1 ac) or 94.0%, followed by herbaceous vegetation types at 129.7 ha (320.5 ac) or 0.3%, sparse vegetation types at 119.2 ha (294.5 ac) or 0.3%, and shrubland types at 43.4 ha (107.2 ac) or 0.1%. A total of 784 AA samples were collected to evaluate the map?s thematic accuracy. When each AA sample was evaluated for a variety of potential errors, a number of the disagreements were overturned. It was determined that 182 plot records disagreed due to either an erroneous field call or a change in the vegetation since the imagery date, and 79 disagreed due to a true map classification error. Those records identified as incorrect due to an erroneous field call or changes in vegetation were considered correct for the purpose of the AA. As a simple plot count proportion, the reconciled overall accuracy was 89.9% (705/784). The spatially-weighted overall accuracy was 92.1% with a Kappa statistic of 89.6%. This method provides more weight to larger map classes in the park. Five map classes had accuracies below 80%. After discussing preliminary results with the parl, we retained those map classes because the community was rare, the map classes provided desired detail for management or the accuracy was reasonably close to the 80% target. When the 90% AA confidence intervals were included, an additional eight classes had thematic accruacies that extend below 80%. In addition to the vegetation polygon database and map, several products to support park resource management include the vegetation classification, field key to the associations, local association descriptions, photographic database, project geodatabase, ArcGIS .mxd files for map posters, and aerial imagery acquired for the project. The project geodatabase links the spatial vegetation data layer to vegetation classification, plot photos, project boundary extent, AA points, and PLOTS database sampling data. The geodatabase includes USNVC hierarchy tables allowing for spatial queries of data associated with a vegetation polygon or sample point. All geospatial products are projected using North American Datum 1983 (NAD83) in Universal Transverse Mercator (UTM) Zone 15 N. The final report includes methods and results, contingency tables showing AA results, field forms, species list, and a guide to imagery interpretation. These products provide useful information to assist with management of park resources and inform future management decisions. Use of standard national vegetation classification and mapping protocols facilitates effective resource stewardship by ensuring the compatibility and widespread use throughout NPS as well as other federal and state agencies. Products support a wide variety of resource assessments, park management and planning needs. Associated information provides a structure for framing and answering critical scientific questions about vegetation communities and their relationship to environmental processes across the landscape.