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Letteratura scientifica selezionata sul tema "304.2/7"

Autore: Grafiati

Pubblicato: 29 luglio 2024

Ultima modifica: 30 luglio 2024

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Articoli di riviste sul tema "304.2/7"

Egger, Thomas, e Joelle Leonie Flueck. "Energy Availability in Male and Female Elite Wheelchair Athletes over Seven Consecutive Training Days". Nutrients 12, n. 11 (25 ottobre 2020): 3262. http://dx.doi.org/10.3390/nu12113262.

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Background: Low energy availability (LEA) is a major problem as athletes often restrict their energy intake. It has been shown that LEA occurs often in female and endurance athletes and in athletes from weight-sensitive or aesthetic sports. The purpose of this study was to investigate energy availability (EA) in elite wheelchair athletes. Methods: Fourteen elite wheelchair athletes (8 males; 6 females) participated. Data were collected using a weighed seven-day food and training diary to estimate energy intake and exercise energy expenditure. Resting energy expenditure and body composition were measured, whereas energy balance (EB) was calculated. Results: Measured over 7 days, EA was significantly different (36.1 ± 6.7 kcal kg−1 FFM day−1) in male compared to female (25.1 ± 7.1 kcal kg−1 FFM day−1) athletes (p < 0.001). From all analyzed days, LEA occurred in 73% of the days in female athletes and in 30% of the days in male athletes. EB was positive in male athletes (+169.1 ± 304.5 kcal) and negative (−288.9 ± 304.8 kcal) in female athletes. Conclusions: A higher prevalence of LEA was found in female compared to male athletes. A higher energy intake would be recommended to meet energy needs and to maximize training adaptation.

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Lawniczak, Mara, Liam M. Crowley e Erica McAlister. "The genome sequence of the dark-edged bee fly, Bombylius major (Linnaeus, 1758)". Wellcome Open Research 8 (1 settembre 2023): 379. http://dx.doi.org/10.12688/wellcomeopenres.19804.1.

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We present a genome assembly from an individual male Bombylius major (the dark-edged bee fly; Arthropoda; Insecta; Diptera; Bombyliidae). The genome sequence is 304.3 megabases in span. The whole assembly is scaffolded into 7 chromosomal pseudomolecules, including the X and Y sex chromosomes. The mitochondrial genome has also been assembled and is 17.8 kilobases in length. Gene annotation of this assembly on Ensembl identified 10,852 protein coding genes.

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Hsu, Leh-Yeh, Jeff W. Kampf e Christer E. Nordman. "Structure and pseudosymmetry of cholesterol at 310 K". Acta Crystallographica Section B Structural Science 58, n. 2 (25 marzo 2002): 260–64. http://dx.doi.org/10.1107/s0108768101018729.

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The structure of cholesterol above the (304.8 K) phase transition, previously published in preliminary form [Hsu & Nordman (1983). Science, 220, 604–606], has been fully refined using augmented X-ray data. The crystals are triclinic, space group P1, with (reassigned) cell parameters a = 27.565 (10), b = 38.624 (16), c = 10.748 (4) Å, α = 93.49 (3), β = 90.90 (3), γ = 117.15 (3)°, and V = 10151 (7) Å3. The unit cell contains Z = 16 molecules, of which eight are related to the other eight by unusual twofold rotational pseudosymmetry. The structure is related to the room-temperature phase, with Z = 8, by a rearrangement of some of the molecules, and by a doubling of the a axis.

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Rahman, Musfira, Gamal Mabrouk e Samer Dessouky. "Development of a Photovoltaic-Based Module for Harvesting Solar Energy from Pavement: A Lab and Field Assessment". Energies 16, n. 8 (9 aprile 2023): 3338. http://dx.doi.org/10.3390/en16083338.

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The concurrent worldwide energy crisis has become a strong incentive for researchers, governments, and industry professionals to focus on sustainable energy solutions. Consequently, pavement photovoltaic energy harvesting technologies, as one of the most common sustainable energy solutions, have recently seen a significant improvement, especially in the new innovative designs of pavement solar panels. In this study, an innovative design for a prototype energy harvesting system was proposed based on thin-film photovoltaic solar panels. In addition, the feasibility of utilizing the generated power of the proposed system to illuminate a pedestrian crosswalk to enhance the safety of an at-grade intersection was also analyzed. The designed prototype consists of a thin-film solar panel, a transparent cover to protect the solar panel, and a wooden frame to support the panel and distribute the load. Different materials for the transparent covering plates were investigated, including polycarbonate with varying thicknesses, textured GlassGrit, and textured float glass with corundum skid-resistant coating on the surface. Finite element analysis was also conducted to analyze the behavior of solar panel-incorporated layered asphalt pavement subjected to dynamic wheel loading. The results showed that the suggested model could sustain the structural loads of a moving wheel without failure. Experimental results of the study showed that considering the seven hours of operation on a typical sunny day, the proposed system could generate approximately 699 Watt-hour of power during 7 h of operation (9 a.m.–4 p.m.) from the 304.8 mm (12 inches) × 304.8 mm (12 inches) pavement solar panel.

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Dhanusri, V., H. Usha Nandhini Devi, A. Sankari, M. Djanaguiraman e V. Veeranan Arun Giridhari. "Quantifying the effects of drought stress on cucumber genotypes differing in membrane integrity". Journal of Applied Horticulture 25, n. 02 (30 agosto 2023): 161–65. http://dx.doi.org/10.37855/jah.2023.v25i02.28.

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Cucumber yield is profoundly influenced by soil moisture, with drought representing a pivotal factor. This study evaluated four cucumber lines (CBECS-37, CBECS-38, CBECS-19, and CBECS-7) within a split-plot experimental design comprising four replications. Irrigation occurred once every seven days, spanning from sowing to the flowering stage. Drought stress was imposed at two critical stages: from flower bud initiation to harvesting (withheld irrigation for 25 days) and from flowering to harvesting (withheld irrigation for 15 days). Morphological and physiological parameters, including plant height, primary branch count, days to first male and female flower appearance, total soluble solids (TSS), relative water content (RWC), chlorophyll content, leaf electrolyte leakage, and malondialdehyde, were assessed 15 days after drought stress. Results indicated greater membrane damage during the flower bud initiation to the harvesting stage (404.5%) compared to the flowering to the harvesting stage (304.6%). Thus, drought stress during flower bud initiation to harvesting was more critical. CBECS-7 demonstrated the highest tolerance to drought conditions, displaying superior outcomes in primary branches, plant height (20.6%), chlorophyll a (16.7%), chlorophyll b (53.4%), total chlorophyll (26.7%), and RWC (6.7%). CBECS-7 exhibited increased chlorophyll content, enhanced photosynthetic activity, robust vegetative growth, and prolific flower and fruit production. These findings establish CBECS-7 as a drought-tolerant line during flower bud initiation to harvesting. In conclusion, this study underscores the critical nature of the flower bud initiation to the harvesting stage and identifies CBECS-7 as a drought-tolerant cucumber line.

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Luedeman, J., e K. R. Ostlie. "Control of First Generation European Corn Borer, 1992". Insecticide and Acaricide Tests 18, n. 1 (1 gennaio 1993): 205. http://dx.doi.org/10.1093/iat/18.1.205.

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Abstract Performance of aerially applied permethrin against ECB was evaluated using 2 different volumes of water carrier. The site was a 135.9 ha commercial corn field located north of Sauk Centre, Stearns county, MN, planted on 5 May, at a population of 71,662 plants/ha. The plots, which measured 15.2 m by 304.8 m (0.91 m row spacing), were established on 12 Jul. Treatments included permethrin @ 0.17 kg(AI)/ha aerially applied with 18.7 liter/ha water and 28.01 liter/ha water and an untreated check. Treatments were arranged in a randomized complete block with 4 replications. Insecticides were applied in a 15 m swath by a Piper Brave equipped with MultiTeeJet (46 core with no. 7 spinner) nozzles on 13 Jul from 6-9 pm under light winds (4.8-14.5 km/h) and moderate temperatures (17.8-21.1 C). Performance was evaluated on 22 Sep by dissecting 10 plants at 5 locations per plot and recording the number of tunnels per plant, and on 8 Nov by harvesting the plots. Statistical procedures used to analyze the data include ANOVA and LSD.

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Omer Sabah Ibrahiem Al-Tamimi. "Estimation of Groundwater Recharge Using Chloride Mass Balance (CMB) Unconfined Aquifer in Kirkuk Sub-Basin/ NE Iraq". Tikrit Journal of Pure Science 23, n. 8 (8 agosto 2018): 83–89. http://dx.doi.org/10.25130/tjps.v23i8.547.

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An estimation of groundwater recharge for the unconfined aquifer in Kirkuk - Iraq sub-basin, has been conducted using chloride mass balance method by measuring the monthly chloride concentration in monthly basis for rainy (wet) season 2015-2016 , samples have been selected from 44 water wells scattered in the region of interest ,the results shown that the groundwater recharge is about 15.6% from the total annual precipitation (304.3 mm) where the total recharge reached ~ 47.5 mm, moreover an additional source of fresh water is feeding the region of interest represented by Kirkuk irrigation channel ,the discharge is nearly 7 m3/sec for 360 days ( 218 MCM/Year). the total amout of recharge to Kirkuk sub-basin is equal to 411 MCM/Year. The discharges of Al-Khassa river which crossed the central parts of ROI, were neglected because the river became controlled by Al-Khassa dam which was recently constructed at the northern border of the ROI which represented by Kirkuk structure. The present study is recommended to use this source of renewal water through strategic plan where additional comprehnsive hydrologic studies and aquifer modeling are needed to prevent the groundwater depleting in the region.

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Stein, PE, SE White, J. Homan, L. Fraher, HH McGarrigle, MA Hanson e AD Bocking. "Fetal endocrine responses to prolonged reduced uterine blood flow are altered following bilateral sectioning of the carotid sinus and vagus nerves". Journal of Endocrinology 157, n. 1 (1 aprile 1998): 149–55. http://dx.doi.org/10.1677/joe.0.1570149.

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The present study examines the effect of carotid sinus/vagosympathetic denervation on fetal endocrine responses to prolonged reduced uterine blood flow (RUBF). Fetal sheep had vascular catheters inserted following bilateral sectioning of the carotid sinus and vagus nerves (denervated, n = 7) or sham denervation (intact, n = 7). Uterine blood flow was mechanically restricted at 126.1 +/- 0.7 days (mean +/- S.E.M.) for 24 h, decreasing arterial oxygen saturation by 47.3 +/- 2.6% (P < 0.01). Fetal plasma samples were obtained at -1, 3, 6, 12 and 24 h for subsequent analyses of arginine vasopressin (AVP), angiotensin II and catecholamines. The AVP response to prolonged RUBF was markedly attenuated in denervated fetuses (15.6 +/- 3.6 to 34.9 +/- 6.0 pg/ml) when compared with intact (10.0 +/- 1.4 to 127.3 +/- 28.4 pg/ml). In contrast, intact fetuses demonstrated no change in plasma angiotensin II concentrations with RUBF whereas denervated fetuses demonstrated a marked increase from 47.5 +/- 18.9 to 128.7 +/- 34.2 pg/ml. The norepinephrine and epinephrine responses to prolonged RUBF were attenuated in denervated fetuses (950.1 +/- 308.9 and 155.8 +/- 58.5 to 1268.3 +/- 474.6 and 290.6 +/- 160.2 pg/ml respectively) when compared with intact (1558.3 +/- 384.4 and 547.3 +/- 304.7 pg/ml to 3289.2 +/- 1219.8 and 896.8 +/- 467.8 pg/ml respectively). These results support a role for the peripheral chemoreceptors in mediating fetal endocrine responses to prolonged RUBF, which may in part lead to the altered cardiovascular responses observed in denervated fetuses under these conditions.

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Burapan, Supawadee, Mihyang Kim, Yingyong Paisooksantivatana, Bekir Engin Eser e Jaehong Han. "Thai Curcuma Species: Antioxidant and Bioactive Compounds". Foods 9, n. 9 (2 settembre 2020): 1219. http://dx.doi.org/10.3390/foods9091219.

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For the functional food applications, antioxidant properties and the bioactive compounds of the 23 Curcuma species commercially cultivated in Thailand were studied. Total phenolic content and DPPH radical scavenging activity were determined. The concentrations of eight bioactive compounds, including curcumin (1), demethoxycurcumin (2), bisdemethoxycurcumin (3), 1,7-diphenyl-(4E,6E)-4,6-heptadien-3-ol (4), germacrone (5), furanodienone (6), zederone (7), and ar-turmerone (8), were determined from the Curcuma by HPLC. While the total phenolic content of C. longa was highest (22.3 ± 2.4 mg GAE/g, mg of gallic acid equivalents), C. Wan Na-Natong exhibited the highest DPPH (2,2-diphenyl-1-picryl-hydrazyl-hydrate) radical scavenging activity. Twenty-three Curcuma species showed characteristic distributions of the bioactive compounds, which can be utilized for the identification and authentication of the cultivated Curcuma species. C. longa contained the highest content of curcumin (1) (304.9 ± 0.1 mg/g) and C. angustifolia contained the highest content of germacrone (5) (373.9 ± 1.1 mg/g). It was noteworthy that 1,7-diphenyl-(4E,6E)-4,6-heptadien-3-ol (4) was found only from C. comosa at a very high concentration (300.7 ± 1.4 mg/g). It was concluded that Thai Curcuma species have a great potential for the application of functional foods and ingredients.

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Schröter-Schmid, Ingrid, e Joachim Strähle. "Synthese und Struktur von Thiolatokomplexen des einwertigen Kupfers: Tetrameres und Octameres [CuSC6H2(i-Pr)3] / Synthesis and Structure of Thiolato Complexes of Monovalent Copper: Tetrameric and Octameric [CuSC6H2(i-Pr)3]". Zeitschrift für Naturforschung B 45, n. 11 (1 novembre 1990): 1537–42. http://dx.doi.org/10.1515/znb-1990-1113.

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[CuSC6H2(i-Pr)3]n = 4 (1), and n = 8 (2) are obtained from CuCO3 · Cu(OH)2 and 2,4,6-tri(isopropyl)thiophenol in a slow reaction, where long reaction times promote the formation of octameric 2.1 crystallizes as colorless platelets, space group C 2/c: a = 3647(2), b = 854.8(6), c = 2061.3(7) pm, β = 105.98(4)°, Ζ = 4. Central unit of the tetrameric complex with the symmetry C2 is a non planar eight-membered Cu–S heterocycle. The four Cu atoms form a rhombus with short edges of 269.7 and 270.1 pm. The bridging SR-ligands are arranged alternatingly above and below the Cu4 rhombus. Octameric 2 crystallies as 2•(H2O)x in the form of orthorhombic yellow blocks, space group Pbcn: a = 2513(1), b = 1975(1), c = 2747(1) pm, Z = 4. The thiolato ligands connect the Cu atoms to form a folded 16-membered Cu–S ring with the symmetry C2. The eight S atoms are arranged at the corners of a cube with the Cu atoms occupying eight of its edges. The Cu–Cu distances are in the range of 267.8 to 304.0 pm. In 1 as well as in 2 the Cu atoms are linearly coordinated with Cu–S distances of 214.7 to 217.9 pm.

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Più fonti

Tesi sul tema "304.2/7"

Martin, Craig. "Containing (dis)order : a cultural geography of distributive space". Thesis, Royal Holloway, University of London, 2012. http://repository.royalholloway.ac.uk/items/1ae71202-579b-8e3e-a33d-5782d8535b77/7/.

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This thesis focuses on the significance of distributive space for understanding capitalist forms of spatio-temporality. It argues that the distributive phase of commodity mobilities has remained a relatively under-represented aspect of social theory, especially in the context of cultural and social geography. The extant work that has focused on distribution tends to be confined to the areas of economic and transport geography. The thesis aims to address the importance of this space for understanding the formations of late capitalist modernity, particularly its role as a specific, but networked space between production and consumption. Significantly the work addresses the 'construction' of this space by focus sing on the substantive case study of containerisation. In doing so it engages with global commodity mobilities in the form of intermodal shipping containers, and their attendant logistical infrastructure. The research critically considers the spatial and temporal apparatuses that have been developed to organise and order the mobilities of the containers; including the design and development of the object itself, alongside a range of logistics and supply chain management strategies. In theoretical terms an important influence on the research has been Michel Serres' work on the interlacing of order and disorder. Given this, a simultaneous focus of the research deals with the immanent presence of disorder in these systemic environments; thus reflecting an intellectual engagement with theoretical work in the areas of turbulence, complexity theory, assemblage theory and Serres' work on the parasite. Substantively this aspect of the research has been determined by considering the place of the accident within networks and systems, alongside the 'tactical-logistics' of smuggling practices. 3

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Libri sul tema "304.2/7"

Clinton, Sanders, a cura di. Regarding animals. Philadelphia: Temple University Press, 1996.

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Regarding Animals. Temple University Press, 2010.

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Regarding Animals. Temple University Press, 2010.

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Capitoli di libri sul tema "304.2/7"

"Chapter 7. Songs Within Songs: Subjectivity and Per for mance in Bertolome Zorzi (74.9) and Jofre de Foixà (304.1)". In Parrots and Nightingales, 123–35. University of Pennsylvania Press, 2014. http://dx.doi.org/10.9783/9780812208382.123.

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