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1
Bao, Yanyu, Qixing Zhou e Yingying Wang. "Adsorption characteristics of tetracycline by two soils: assessing role of soil organic matter". Soil Research 47, n. 3 (2009): 286. http://dx.doi.org/10.1071/sr08112.
Abstract (sommario):
The adsorption characteristics of tetracycline by 2 soils including a clay-rich soil (cinnamon soil) and an iron oxide-rich soil (red soil) were investigated as a function of soil organic matter (SOM). SOM is the main adsorbent for tetracycline in the soil environment. The results indicated that the adsorption kinetics of tetracycline by the different soils with or without organic matter was described by the Elovich equation and the exponent equation. The adsorption of tetracycline on red soil was quite rapid and equilibrium could be reached after 5 h. In contrast, the concentration of tetracycline in cinnamon soil reached equilibrium after 11 h. The difference in equilibrium time in cinnamon soil and red soil was caused by their dominant components for adsorption, including clays, organic matter, and Al/Fe hydrous oxides. It took longer for the penetration of tetracycline into the interlayers between clays and organic matter in cinnamon soil, but tetracycline needed less time for adsorption through surface complexation on oxide surfaces of red soil. Removing SOM from soil markedly shortened the equilibrium time (7 h) of adsorption and reduced the equilibrium concentration (Cs) in cinnamon soil, but not in red soil, because of different dominant components for adsorption in the 2 natural soils. In natural and SOM-free soils, >98% of tetracycline in solution could be sorbed. The adsorption of tetracycline on natural and SOM-free soils was well described by Freundlich adsorption isotherms. Batch adsorption experiments showed that the adsorption of tetracycline on natural red soil was stronger than that on natural cinnamon soil. Adsorption capacity (KF) decreased with an increase in SOM removed from soil, which is attributed to the effect of tetracycline sorbed by SOM in different soils. However, SOM affected the adsorption intensity (n) of different soils diversely; there was a decrease for red soil and an increase for cinnamon soil. In particular, red soil with high Al/Fe hydrous oxides had higher adsorption affinities than cinnamon soil.
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Sørhaug, Tian. "Anders Johansen (red.): Kunnskapens språk; skrivearbeid som forskningsmetode". Norsk antropologisk tidsskrift 25, n. 01 (1 aprile 2014): 56–58. http://dx.doi.org/10.18261/issn1504-2898-2014-01-11.
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Utari, Evrita Lusiana, Latifah Listyalina e Desty Ervira Puspaningtyas. "Aplikasi self-organizing mapping sebagai alat deteksi anemia pada citra sel darah merah". Jurnal Gizi Klinik Indonesia 16, n. 2 (25 ottobre 2019): 64. http://dx.doi.org/10.22146/ijcn.39560.
Abstract (sommario):
Application of self-organizing mapping as anemia detection using an image of red blood cellsBackground: Anemia is a nutritional problem characterized by changes in blood cell size, especially in microcytic or macrocytic anemia. Iron deficiency anemia is included in hypochromic microcytic anemia because it has a smaller than normal size red blood cell and has a lower than normal hemoglobin (Hb) arising from reduced supply of iron for erythropoiesis (cell maturation process red blood). Analysis based on red blood cell image is a tool to detect anemia using technology applications. Self-organizing mapping (SOM) is one of the artificial neural networks by dividing the input pattern into several groups, so the network output is in the form of groups that are most similar to the input.Objective: To measure the accuracy of SOM for detecting the size of red blood cells in anemia condition.Methods: The type of research was an observational laboratory. The study was conducted at the Electrobiomedical Laboratory of Universitas Respati Yogyakarta from January to August 2018. The sample consisted of anemia and non-anemia red blood cells which had been tested in a laboratory of 92 blood preparations. Stage of measuring red blood cells consisted of pre-processing (cropping, gray scaling, contrast enhancement, and screening), segmentation, feature extraction, and image identification with SOM. The image identification results were concluded by calculating the accuracy of the anemia detection system based on laboratory examination results.Results: The characteristic that distinguishes anemia and non-anemia was in the size of red blood cells. Anemic red blood cells had different pixel intensities than non-anemic red blood cells. The image of non-anemia red blood cells had a full round or oval image. From as many as 92 detections of blood images, five blood images were not by the target results of laboratory tests. The accuracy achieved by the system was 94.57%.Conclusions: The accuracy value of anemia detection using SOM can be used to identify the type of anemia based on red blood cell size.
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Wanström, Sofia. "Skratt som fastnar". Budkavlen 94 (11 maggio 2023): 109–11. http://dx.doi.org/10.37447/bk.129693.
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Lindqvist, Yrsa. "Frågelistan som källa och metod". Budkavlen 85 (13 giugno 2023): 89–90. http://dx.doi.org/10.37447/bk.130423.
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Zhang, Lei, Jia Xue Wang, Meng Jing Xiao e Bao Qiang Liu. "The Relation between Stability of Aggregates on Surface and SOM of Red Bare Soil in the Karst Area of East Yunnan, China". Advanced Materials Research 1030-1032 (settembre 2014): 920–25. http://dx.doi.org/10.4028/www.scientific.net/amr.1030-1032.920.
Abstract (sommario):
Red bare soil is a kind of soil remained on plateau from ancient ages. Researchs toward better understanding of the relationship between stability of surface aggregate and SOM (Soil Organic Matter) based on 14 typical samples indicate that red bare soil clay (<0.002mm) contents between 12.18% and 64.02% which belongs to poor cultivation performance soil. The number of macro-soil aggregates after dry sieving were far more than the number after wet sieving. Water-stable aggregate content (WSAC) informed the feature of red bare soil. The WSAC were between 28.77% ~ 52.87% at the size >0.25mm and the aggregates destruction rate (PAD0.25) were 34.28% to 68.10%, mean weight diameter (MWD) were at the size of 0.53 to 1mm, geometric mean diameter (GMD) were between 0.37 and 0.58mm, fractal dimension (FD) were between 2.79 and 2.92. The 5 index above indicated the structural stability, anti erodibility and physical property were both poor when compared with other typical soil samples in southwest karst area of China. The research also indicated that soil organic matter (SOM) and WSAC has more effect than mechanical aggregate. SOM has significant positive correlation with MWD and GMD, and significant negative correlation with PAD0.25 and FD. Lack of SOM and exposed led to soil structure stability deterioration. These can be the reason why soil erosion seriously and can’t grow vegetation in red bare soil area.
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Hansen, Per Krogh. "Om dekonstruktionens værktøjskasse". K&K - Kultur og Klasse 24, n. 81 (23 aprile 1996): 137–44. http://dx.doi.org/10.7146/kok.v24i81.20698.
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Edwards, Linnell, e Jack Burney. "Effect of preceding crop management on crop yield and soil properties assessed using standard erosion plots". Canadian Journal of Soil Science 88, n. 4 (1 agosto 2008): 553–58. http://dx.doi.org/10.4141/cjss07074.
Abstract (sommario):
Using blanket crops of ryegrass and under-seeded barley (with red clover) super-imposed on standard erosion plots just coming out of potatoes, this study assessed the influence of preceding soil-and-crop management treatments viz., straw mulch, compost and liquid pig manure (LPM) (antecedent input variables) on crop yield, soil physical properties and erosion amounts (subsequent response variables). There were no significant carry-over effects on erosion amounts, and effects on yield were limited to red clover. However, soil properties (reflecting compactability, structure and soil water retention) were affected throughout - showing general improvements of up to 46%. Thus, soil water content (SWC) was 9.4% greater with compost amendment than it was for the control. SWC with compost was also greater than it was with straw mulch by 7.9%. Soil organic matter (SOM) showed a 13% increase with compost amendment relative to the control. SOM also showed a 5% increase with compost relative to straw mulch. Compost uniquely gave yield increases in red clover, double that of the control, while LPM gave unique increases in hydraulic conductivity and SOM under red clover to the extent of 60 and 24% (respectively) relative to the control. Key words: Soil physical properties, soil erosion, organic amendments, potatoes, barley, red clover
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Skak, Mette. "Anmeldelse af Rusland som militær stormagt". Politica 53, n. 1 (16 febbraio 2021): 82–86. http://dx.doi.org/10.7146/politica.v53i1.129872.
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Lübker, Henrik. "»Både og« som utopi og realitet". K&K - Kultur og Klasse 36, n. 106 (22 marzo 2009): 241–46. http://dx.doi.org/10.7146/kok.v36i106.22032.
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Angers, Denis A., Linnell M. Edwards, J. Brian Sanderson e Nicole Bissonnette. "Soil organic matter quality and aggregate stability under eight potato cropping sequences in a fine sandy loam of Prince Edward Island". Canadian Journal of Soil Science 79, n. 3 (1 agosto 1999): 411–17. http://dx.doi.org/10.4141/s98-033.
Abstract (sommario):
Soil degradation and soil organic matter (SOM) reduction have long been suspected to occur under intensive potato (Solanum tuberosum L.) production in Prince Edward Island. Thus, this study was conducted to evaluate the effect of eight potato cropping sequences involving barley (Hordeum vulgare L.), ryegrass (Lolium multiflorum L.), red clover (Trifolium pratense L.) and barley under-seeded with red clover on aggregate stability and SOM properties of a Charlottetown fine sandy loam (Orthic Humo-Ferric Podzol). Total C and N, light-fraction (density < 1.7 g cm−3) C (LF-C) and light-fraction N (LF-N), microbial biomass C (MBC), carbohydrate content, alkaline phosphatase activity (APA) and aggregate stability were determined in the 0- to 15-cm soil layer in the 6th and 10th years of the trial. Average C and N contents were 20 to 27% greater in sequences that included 3 or 4 yr of potatoes and a high frequency of red clover than in a 9-yr potato sequence; and were attributed to the less frequent tillage and higher organic matter inputs associated with the forage component. The response for MBC, LF-C, LF-N and APA was greater than those for total C and N suggesting that the former parameters may better reveal SOM changes caused by variations in potato management than the latter. Light-fraction N was particularly sensitive to the inclusion of perennial legumes in the cropping sequence. Wet-aggregate stability was 33% higher after 6 yr in the sequence with 50% frequency of red clover than in the continuous potato system, but no effect was noted after 10 yr. The results of this study indicate that sequences which are limited to 30 to 40% of potatoes and have a high frequency of perennial forage such as red clover, lead to greater SOM content and quality of a Charlottetown fine sandy loam compared to continuous potatoes. Trends in aggregate stability generally followed those of SOM fractions but the effects were relatively smaller and varied with time. Key words: Potato, Solanum tuberosum L., soil aggregation, organic matter, carbon, nitrogen, light fraction, microbial biomass
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Krämer, Sibylle, e Solveig Daugaard. "Hvorfor notationel ikonicitet er en form for operationel ikonicitet". Sensorium Journal 2 (13 settembre 2017): 55–79. http://dx.doi.org/10.3384/sens.2002-3030.2017.2.55-79.
Abstract (sommario):
1. Det fonografiske dogme
Hvad betyder ‘inskription’? Få spørgsmål forekommer lettere at besvare: en inskription er sprog, som er blevet nedskrevet. Den holder det talte ords flygtighed på afstand og befrier kommunikation fra talens ansigt-til-ansigt-forankring. Det skrevne ord overfører den akustiske sekvens til en visuel konfiguration; det udvider kommunikationen over afstande i tid og rum. At forvandle det talte til det skrevne muliggør ligeledes kontrol, rettelser og kritik, ligesom det åbner for spredning og arkivering af det der kommunikeres som tekst.
Det var nøjagtig debatten omkring ‘mundtlighed og skriftlighed’ (Goody 1968, 1986; Havelock 1976, 1986; Ong 1982)[1] i den sidste tredjedel af det forgangne århundrede, som afdækkede skriftens kreativitet og hævede det skrevne ord til det samme niveau som det talte. Siden da er det talte og det skrevne ord blevet betragtet som to forskellige former for sprog, hver med sin egen ‘performance profil’ i relation til deres mediale, sproglige, og kulturelantropologiske karakter (Echlich 1994; Koch/Oesterreicher 1985, 1994; Olson 1991; Parry 1971; Raible 1991, 1993; Zumthor 1984).
På trods af denne genopdagelse af skriftlighed, er en traditionel antagelse – nærmest en vedtaget sandhed i debatten om skriftlighed – forblevet uudfordret: Troen på skriftens sproglignende karakter. I forbindelse med den almindelige tvedeling mellem sprog og billede, placeres skriften udelukkende inden for sprogets felt. Skrift fortolkes som en form for sprog og ikke som en form for billede. Den i mellemtiden klassiske håndbog Schrift und Schriftlichkeit. Writing and its use (Günther/Ludwig (red.) 1994), opsummerer udfaldet af skriftlighedsdebatten og definerer skrift som “den mængde af skriftlige tegn gennem hvilken et talt sprog optegnes” (Günther/Ludwig (red.) 1994: VIII.; Koch 2009: 58). Vi vil kalde det synspunkt at skrift først og fremmest er en fikseret version af et talt sprog for det fonografiske dogme (Krämer 2003b: 520).
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Hellström, Martin, Linn Areskoug, Katarina Båth, Viola Bao, Björn Sundmark, Helena Bodin e Ulf Boëthius. "Recensioner". Tidskrift för litteraturvetenskap 45, n. 4 (1 gennaio 2015): 69–91. http://dx.doi.org/10.54797/tfl.v45i4.8917.
Abstract (sommario):
Martin Hellström om ELINA DRUKEREVA BILLOW. BILDERBOKS KONSTNÄR OCH FÖRFATTAREStockholm & Göteborg: Makadam, 2014, 240 s.
Linn Areskoug om CARIN FRANZÉN (RED.)GRUNDBOK I LITTERATURVETENSKAP. HISTORIA, PRAKTIK, TEORILund: Studentlitteratur, 2015, 239 s.LASSE HORNE KJÆLDGAARD ET AL (RED.)LITTERATUR. INTRODUKTION TILL TEORI OCH ANALYSLund: Studentlitteratur, 2015, 496 s.
Katarina Båth om PETER HENNINGMINNE, JAG, 1800. LITTERÄR SJÄLVFRAMSTÄLLNING HOS ATTERBOM, GEIJER, WIDERBERG OCH HEIDENSTAMGöteborg & Stockholm: Makadam förlag, 2015, 256 s. (diss. Lund)
Viola Bao om ELISABETH HJORTHFÖRTVIVLADE LÄSNINGAR. LITTERATUR SOM MOTSTÅND OCH LÄSNING SOM ETIKGöteborg: Glänta produktion, 2015, 301 s. (diss. Uppsala)MARA LEENÄR ANDRA SKRIVER. SKRIVANDE SOM MOTSTÅND, ANSVAR OCH TIDGöteborg: Glänta produktion, 2014, 285 s. (diss. Göteborg)
Björn Sundmark om LENA KÅRELANDSKÖNLITTERATUR FÖR BARN OCH UNGA. TERMER, GENRER, ANALYSERLund: Studentlitteratur, 2015, 248 s.
Helena Bodin om LINA SJÖBERGOFROMMA BIBELTOLKNINGARGöteborg & Stockholm: Makadam, 2014, 203 s.
Ulf Boëthius om OLLE WIDHEDÖ DIN HUND! KRIG, LEK OCH LÄSNING I SVENSK BARNBOKSUTGIVNING UNDER 200 ÅRLund: Ellerström 2015, 366 s.
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Guo, Yun Kai, Fan Zeng, Mei Qing Ding, Xiao Yan Cao e Jin Hui Zhang. "Research on SPOT-5 Image-Based Soil Organic Matter Content Estimation". Applied Mechanics and Materials 409-410 (settembre 2013): 246–51. http://dx.doi.org/10.4028/www.scientific.net/amm.409-410.246.
Abstract (sommario):
Soil organic matter (SOM) is the most active material component in soil, whats more, it is significant for soil fertility evaluation and agricultural sustainable development. This paper tries to establish a regional SOM prediction model of Yang Jiaqiao town, Xiangtan county in Hunan province, which based on the data obtained in the field and SPOT-5 image with the help of remote sensing retrieval technique, and then get the regional distribution of SOM. The results show that the most SOM content in experimental area is higher than 3%, which indicates SOM plays an important role in spectral reflectance characteristics, then establish corresponding estimation model and test them after transferring the reflectivity spectral data. The paper analysis and comes to a conclusion that the most appropriate model is the second-order polynomial one of red band based on SPOT-5 image by comparing the models between SOM content and single band measured reflectance.
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Yan, Ping, Kairong Lin, Yiren Wang, Xinjun Tu, Chunmei Bai e Luobin Yan. "Assessment of Influencing Factors on the Spatial Variability of SOM in the Red Beds of the Nanxiong Basin of China, Using GIS and Geo-Statistical Methods". ISPRS International Journal of Geo-Information 10, n. 6 (29 maggio 2021): 366. http://dx.doi.org/10.3390/ijgi10060366.
Abstract (sommario):
Understanding the spatial variability of soil organic matter (SOM) is crucial for implementing precise land degradation control and fertilization to improve crop productivity. Studying spatial variability provides a scientific basis for precision fertilization and land degradation control. In this study, geostatistics and classical statistical methods were used to analyze the spatial variability of SOM and its influencing factors under various degrees of land degradation in the red bed area of southern China. The results demonstrate a declining trend for SOM content with increasing land degradation. The SOM content differs profoundly under different land degradation degrees. The coefficient of variation ranges from 13.61% for extreme land degradation to 8.98% for mild land degradation, 7.96% for moderate land degradation, and 5.64% for severe land degradation. A significant positive correlation is displayed between the altitude and the SOM (p < 0.01) under mild and moderate land degradation conditions. Bulk density and pH value have a significant negative correlation with SOM (p < 0.01). It can be observed that terrain factors, as well as physical and chemical soil parameters, have a great influence on SOM.
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HUAROTE ZEGARRA, RAUL EDUARDO, e EDWARD JOSÉ FLORES MASIAS. "CLASIFICACIÓN DE TIPOS DE HUELLA DACTILAR CON RUIDO USANDO RED SOM". DYNA INGENIERIA E INDUSTRIA 95, n. 1 (2020): 239. http://dx.doi.org/10.6036/9506.
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Fadul, Anamaria. "Kultur og kommunikation: den nødvendige teori". MedieKultur: Journal of media and communication research 10 (1 settembre 1994): 6. http://dx.doi.org/10.7146/mediekultur.v10i0.999.
Abstract (sommario):
De kommunikationsteorier, som de fleste latinamerikanske medieforsk- ere arbejder med, er ikke tidssvarende. Mange forskere arbejder stadig med manipulationsteorier og hænger fast i en romantisk idé om "det fol- kelige". Derfor beskæftiger de sig kun lidt med de mest populære medie- genrer, som virkelig har en kulturel betydning, f.eks. telenovelaen. Det er på tide, argumenterer Anamaria Fadul i dette teoretiske manifest, at skabe Den Nødvendige Teori - en medieteori, som har rødder i den latinameri- kanske medievirkelighed og som indser telenovelaens centrale betydning for en fælles latinamerikansk kulturel identitet. Artiklen gennemgår i hoved- træk udviklingen indenfor den latinamerikanske medieteori siden 70´erne og kommer med forslag til udvikling af en ny teoretisk vinkel med vægt på massekultur og genrer. Artiklen er oprindeligt udgivet (1989) i Margarida M. Kunsch og Francisco Assis Fernandes (red.), Communicacao, Demo- cracia e Cultura. São Paolo: Loyola/Intercom.
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Sun, Zhongxiu, Siyi Duan, Yingying Jiang, Qiubing Wang e Ganlin Zhang. "Dominant Aggregate Binding Agent Dynamics of Quaternary Ancient Red Soils under Different Land Use Patterns". Agronomy 13, n. 6 (9 giugno 2023): 1572. http://dx.doi.org/10.3390/agronomy13061572.
Abstract (sommario):
The cementation mechanisms and processes of aggregate binding agents are important in understanding aggregate formation. However, the role of threshold values and the proportions of organic and inorganic binding agents in aggregate formation remain unclear. This research investigated the dominant aggregate binding agent dynamics in a sequence comprising buried ancient red soil unaffected by modern climate changes and human activities, alongside nearby exposed Quaternary ancient red soils subjected to different land use patterns influenced by these factors in northeastern China. By analyzing soil age, aggregate compositions, and organic/inorganic indicators of binding agents, including soil organic matter (SOM), free iron oxide (Fed), poorly crystalline iron oxide (Feo), crystalline iron oxide (Fed-Feo), and total clay particles (TCL), we determined the relative contributions of different binding agents using redundancy analysis (RDA). The results revealed that the buried ancient red soil did not contain dominant binding agents in the aggregate formation before 91.01 ka BP. Due to denudation, the buried ancient red soil was exposed at the surface and experienced the importation of soil organic matter, weathering of silicate-bound iron oxides, and crystallization of poorly crystalline iron oxides resulting from the effects of different land use patterns from 91.01 ka to the present. Under the influence of binding agent dynamics, dominant binding agents in the exposed Quaternary ancient red soils’ aggregate formation changed into SOM and Fed. When the C/(Fed-Feo) molar ratio was less than 2.13, Fed-Feo was the dominant aggregate binding agent. When the C/(Fed-Feo) molar ratio was greater than 2.13, SOM was the dominant aggregate binding agent. The results of this study improve our understanding of aggregate formation and the relationship between soil organic matter and iron oxides.
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Sund, Ann-Helen. "Mera med mindre". Budkavlen 91 (19 maggio 2023): 45–55. http://dx.doi.org/10.37447/bk.129821.
Abstract (sommario):
Ett förbund som kanske mer än någon annan sammanslutning i Finland står för det husliga är Marthaförbundet. Jag kommer i denna artikel att analysera husliga färdigheter, genom att fokusera på ett återkommande tema i Marthaförbundets hushållsrådgivning, nämligen devisen ”mera med mindre”. Detta råkar vara förbundets uttalat ledande tema just detta år 2012. Det var det också 1994, om än inte med precis samma tyngdpunkter som idag. Båda gångerna detta tema aktualiserades explicit, var i tider av ekonomisk kris i samhället. Krisperioder har i Marthaförbundets långa historia med rådgivning om hushållning och konsumtion medför en intensifiering och uppblomstring av verksamheten, som förbundets historik med anledning av dess 100-årsjubileum, Martha – kvinna i tiden 1899–1999 (red. Liljeberg-Elgert), visar.
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Gregory, S. D. L., J. D. Lauzon, I. P. O’Halloran e R. J. Heck. "Predicting soil organic matter content in southwestern Ontario fields using imagery from high-resolution digital cameras". Canadian Journal of Soil Science 86, n. 3 (1 maggio 2006): 573–84. http://dx.doi.org/10.4141/s05-043.
Abstract (sommario):
The spatial pattern of soil organic matter (SOM) content may provide information for variable-rate fertilizer nitrogen recommendations, but often requires intensive soil sampling to be properly characterized. This study evaluated whether imagery of bare soils obtained using a high-resolution digital camera system may be used to predict SOM content in southwestern Ontario fields. Using the camera system, image intensity was measured in near-infrared (0.70–0.80 µm) and visible red (0.60–0.70 µm), green (0.50–0.60 µm), and blue (0.40–0.50 µm) wavebands underboth controlled and field conditions for soil samples representative of the range in SOM typically found in southwestern Ontario fields. Under controlled conditions, SOM content did not relate well to image intensity measured in any waveband when multiple soil types were used (r2 ≤ 0.39). Without multiple soil types, image intensity in all wavebands related to SOM content for soil samples taken from two of the sites (r2 ≥ 0.53 for both sites). Image intensity measured under field conditions related to SOM content for only one site (r2 ≥ 0.54 for all wavebands). Variability between SOM content and image intensity shown in this study is most likely attributed to the relative variability in SOM content and confounding factors such as surface residue. Key words: Soil organic matter, soil reflectance, high-resolution digital camera, aerial imagery
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Lome, Karina Birkeland, e Espen Andersen. "Finn.no: En metode for disiplinert strategisk eksperimentering". Magma 22, n. 3 (1 marzo 2019): 68–72. http://dx.doi.org/10.23865/magma.v22.1179.
Abstract (sommario):
Casen beskriver Finn.no, som hadde en dominerende markedsandel, men som likevel var opptatt av en kontinuerlig innovasjonsprosess for å møte konkurransen. Den introduserer verktøyet «ledersnurren»; som er en metamodell, som beskriver hvordan man jobber, og illustrerer hvordan tenke og hvordan lede. «Snurren» tok utgangspunkt i tre spørsmål som måtte besvares av ledelsen: • Hvem skaper vi verdi for? • Hvilken verdi skaper vi? • Hvordan vet vi at vi skaper verdi? Artikkelen er skrevet i formatet undervisningscase, som har en åpen slutt og overlater til leseren å reflektere over hvordan læringen i denne casen kan overføres til egen situasjon. Fenomenet som beskrives Finn.no er et glimrende eksempel på en digital organisasjon der ledelsen gir slipp på visse oppgaver og lar dataene bestemme, samtidig som endringer og innovasjonsoppgaver presses nedover i organisasjonen. Resultatet er en datadrevet organisasjon som bedriver kontinuerlig innovasjon basert på hva markedet sier. Teoretisk forankring Finn.nos arbeidsprosess er forankret i litteratur om agil systemutvikling og designtenkning. Noen publikasjoner som diskuterer dette i organisasjonssammenheng er bl.a. Andersen, E., Johnson, J.C., Kolbjørnsrud, V. & Sannes, R. (2018). Chapter 2: The data-driven organization: Intelligence at SCALE, i Sasoon, A. (red.) At the Forefront, Looking Ahead (s.23–42). Snow, C.C., Fjeldstad, Ø.D. & Langer, A.M. (2017). Designing the digital organization. Journal of Organization Design, 6:7. Motivasjonstenkningen bak «snurren» er inspirert av Pink, Daniel H. (2011). Drive: The Surprising Truth About What Motivates Us, USA: Riverhead Books Informasjonsgrunnlag Casen er skrevet på bakgrunn av samtaler med Karina Birkeland Lome og en rekke samtaler og interaksjoner (lederopplæring, strategidiskusjoner) både med Finn.no, Schibsteds ledelse og DNB.
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Chr. Sidenius, Niels. "Hans Chr. Overgaard, Forskning som tjener, København: Statens samfundsvidenskabelige Forskningsråd, 1984 (distribution: Aalborg Universitetsforlag), 191 s., 68.00 kr.: Egil Fivelsdal (red.). Nærbilleder af forskning. København: Nyt fra Samfundsvidenskaber". Politica 17, n. 3 (1 gennaio 1985): 445. http://dx.doi.org/10.7146/politica.v17i3.68742.
Abstract (sommario):
Hans Chr. Overgaard, Forskning som tjener, København: Statens samfundsvidenskabelige Forskningsråd, 1984 (distribution: Aalborg Universitetsforlag), 191 s., 68.00 kr.: Egil Fivelsdal (red.). Nærbilleder af forskning. København: Nyt fra Samfundsvidenskaberne, 1985, 265 s., 117,25 kr.
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Fibiger, Johannes. "og&og". Passage - Tidsskrift for litteratur og kritik 35, n. 84 (31 dicembre 2020): 132–35. http://dx.doi.org/10.7146/pas.v35i84.124944.
Abstract (sommario):
Anmeldelse af:
Jens Lohfert Jørgensen og Martin Rohr Gregersen (red.): Litteratur og ... Litteraturvidenskabens tværfaglige engagement, Aalborg Universitetsforlag 2019, 262 sider. Gratis download som e-bog.
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Rosef, Olav, Håvard L. Nystøyl, Tore Solenes e Jon M. Arnemo. "Haematological and serum biochemical reference values in free-ranging red deer (Cervus elaphus atlanticus)". Rangifer 24, n. 2 (1 aprile 2004): 79–85. http://dx.doi.org/10.7557/2.24.2.304.
Abstract (sommario):
Analyses of haematological and biochemical constituents were carried out on the Norwegian subspecies of free-ranging red deer (Cervus elaphus atlanticus). All animals were captured from January to March by using a mixture of xylazine and tiletamin-zolazepam. Immobilisation was performed with plastic projectile syringes fired from a dart gun. Fourteen haematological parameters were analysed. There were no differences in the values between hinds and stags and between adults and calves (P > 0.01). Of the 22 biochemical compounds investigated there was a significant difference (P < 0.01) between calves and adults for lactate dehydrogenase (LD), globulin, beta globulin, gamma globulin, and the minerals Na, K, Mg, Zn, Ca, and P. Differences (P < 0.01) between hinds and stags were found in cholesterol, gamma glutamyl transferase (GGT), alpha-1 globulin, alpha-2 globulin and Cu. The blood values determined in this study can be used as reference values for this red deer subspecies immobilised with a mixture of xylazine-tiletamin-zolazepam for health control and diagnosis of diseases.Abstract in Norwegian /Sammendrag:Hematologiske og biokjemiske parametere er analysert på norsk frittlevende hjort (Cervus elaphus atlanticus). Hjorten ble immobilisert i tidsrommet januar til mars ved hjelp av et spesialgevær ladet med plast kanyler som inneholdt en blanding av xylazin og tiletamin-zolazepam. Det var ingen forskjeller i de14 undersøkte hematologiske verdiene mellom hinder, kalver og bukker (P>0,01). Av de 22 biokjemiske parametrene som ble undersøkt var det en signifikant forskjell mellom kalver og voksne (P<0,01) når det gjelder laktat dehydrogenase, globulin, beta globulin, gamma globulin og mineralene Na, K, Mg, Zn, Ca og P. Det var en signifikant forskjell mellom hinder og bukker (P<0.01) på parametrene kolesterol, gamma glutamyl transferase, alfa-1 globulin, alfa-2 globulin og Cu. Blodverdiene som ble målt i dette studiet kan bli brukt som referanseverdier for norsk hjort som er immobilisert med blandingen xylazin-tiletamin-zolazepam for helsekontroll og for diagnostisering av sykdommer.
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Borsgård, Gustav, Arne Florin, Martin Malmström, Sofia Roberg, Anders E. Johansson, Ylva Lindberg e Jesper Olsson. "Recensioner". Tidskrift för litteraturvetenskap 49, n. 2-3 (1 gennaio 2019): 120–39. http://dx.doi.org/10.54797/tfl.v49i2-3.6655.
Abstract (sommario):
PETER DEGERMANTALA FÖR DET GRÖNA I LÖVET: Ekopoesi som estetik och aktivismLund: Ellerströms, 2018, 309 s.
INGRID LINDELL & ANDERS ÖHMAN (RED.)FÖR BERÄTTELSENS SKULL: Modeller för litteraturundervisningenStockholm: Natur och Kultur, 2019, 215 s.
VICTOR MALMÄR DET DETTA SOM KALLAS POSTMODERNISM? En studie i Katarina Frostensons och Stig Larssons diktningEllerströms, 2019, 478 s. (diss. Lund)
RYAN PALMERENCHANTING IRRUPTIONS: Wonder, Noir and the Environmental ImaginaryUppsala: Uppsala universitet, 2018, 170 s. (diss. Uppsala)
SOFIA PULLSSKRIVANDE OCH BLIVANDE: Konstruktioner av skönlitterärt skrivande i handböcker och läromedel 1979–2015Umeå: Umeå universitet, 2019, 237 s. (diss. Umeå)
EVELINA STENBECKPOESI SOM POLITIK: Aktivistisk poetik hos Johannes Anyuru och Athena FarrokhzadLund: Ellerströms, 2017, 294 s. (diss. Lund)
JEFF WERNERPOSTDEMOKRATISK KULTURHalmstad: Gidlunds förlag, 2018, 170 s.
26
Lillbroända-Annala, Sanna. "Minnenas stad". Budkavlen 93 (19 maggio 2023): 111. http://dx.doi.org/10.37447/bk.129743.
Abstract (sommario):
Recension av: Muistin kaupunki. Tulkintoja kaupungista muistin ja muistamisen paikkana (Minnets stad. Tolkningar av staden som plats för minnen och hågkomster, författarens egen översättning). Red. Katri Lento & Pia Olsson. Suomalaisen Kirjallisuuden Seura, Helsinki 2013. 391 s.
27
Heller Pearlshtien, Daniela, e Eyal Ben-Dor. "Effect of Organic Matter Content on the Spectral Signature of Iron Oxides across the VIS–NIR Spectral Region in Artificial Mixtures: An Example from a Red Soil from Israel". Remote Sensing 12, n. 12 (18 giugno 2020): 1960. http://dx.doi.org/10.3390/rs12121960.
Abstract (sommario):
The investigation of iron oxides in soil using spectral reflectance is very common. Their spectral signal is significant across the visible–near infrared (VIS–NIR) spectral range (400–1000 nm). However, this range overlaps with other soil chromophores, such as those for water and soil organic matter (SOM). This study aimed to investigate the effect of different SOM species on red soil from Israel, which is rich in hematite iron oxide, under air-dried conditions. We constructed datasets of artificially mixed soil and organic matter (OM) with different percentages of added compost from two sources (referred to as A2 and A5). Eighty subsamples of mixed soil–OM were prepared for each of the OM (compost) types. To investigate the effect of OM on the strong iron-oxide absorbance at 880 nm, we generated two indices: CRDC, the absorbance spectral depth change at 880 nm after continuous removal, and NRIR, the normalized red index ratio using 880 and 780 nm wavelengths. The different OM types influenced the soil reflectance differently. At low %SOM, up to 1.5%, the OM types behaved more similarly, but as the OM content increased, their effect on the iron-oxide signal was greater, enhancing the significant differences between the two OM sources. Moreover, as the SOM content increased, the iron-oxide signal decreased until it was completely masked out from the reflectance spectrum. The masking point was observed at different SOM contents: 4% for A5 and 8% for A2. A mechanism that explains the indirect chromophore activity of SOM in the visible region, which is related to the iron-oxide spectral features, was provided. We also compared the use of synthetic linear-mixing practices (soil–OM) to the authentic mixed samples. The synthetic mixture could not imitate the authentic soil reflectance status, especially across the overlapping spectral position of the iron oxides and OM, and hence may hinder real conditions.
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Ødegaard, Marianne. "Naturfag til nytte og glede! Naturvitenskapelig allmenndannelse ved dramatiske virkemidler". Nordic Studies in Science Education 3, n. 1 (11 dicembre 2012): 76–85. http://dx.doi.org/10.5617/nordina.515.
Abstract (sommario):
Artikkelen er tidligere trykket som kapittel i boka Naturfagdidaktikk – perspektiver, forskning, utvikling (Red: D. Jorde & B. Bungum, ISBN: 82-05-31477-2), utgitt på Gyldendal Akademisk i 2003. Kapitlet gjengis i NorDiNa etter avtale med forlaget og forfatteren.
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Rønning, Helge. "Kathrin Fahlenbrach, Erling Sivertsen, Rolf Werenskjold (red.): Så virkelig som på kino". Norsk medietidsskrift 21, n. 04 (15 dicembre 2014): 363–67. http://dx.doi.org/10.18261/issn0805-9535-2014-04-13.
30
HUAROTE ZEGARRA, RAUL EDUARDO, e EDWARD JOSÉ FLORES MASIAS. "RED SOM PARA CLASIFICAR TIPOS DE HUELLA DACTILAR CON PRESENCIA DE RUIDO". DYNA NEW TECHNOLOGIES 6, n. 1 (2019): [13 p.]. http://dx.doi.org/10.6036/nt9354.
31
Thomas, Cathy L., Tegan Darch, Paul Harris, Deborah A. Beaumont e Stephan M. Haefele. "The Distribution of Soil Micro-Nutrients and the Effects on Herbage Micro-Nutrient Uptake and Yield in Three Different Pasture Systems". Agronomy 11, n. 9 (29 agosto 2021): 1731. http://dx.doi.org/10.3390/agronomy11091731.
Abstract (sommario):
Pasture micro-nutrient concentrations are often deficient for herbage productivity and the health of livestock. The aim of this study was to investigate soil and herbage micro-nutrient content and the effects on yield on the three pasture systems of the North Wyke Farm Platform (NWFP): high-sugar grass + legume mix minus nitrogen (N) fertilizer (blue/HSG + L); permanent pasture plus N fertilizer (green/P + N); high-sugar grass plus N fertilizer (red/HSG + N). The locations with high soil total micro-nutrient concentrations had a greater slope and higher soil organic matter (SOM) content. Herbage micro-nutrient concentrations were often greater at the locations with high soil total micro-nutrient concentrations. The concentration and uptake of nearly all micro-nutrients was greatest in the herbage of the green/P + N system, which had the highest SOM content, whereas they were often lowest in the red/HSG + N system, which had the lowest SOM and the highest yield, indicating biomass dilution of micro-nutrients in the herbage. At the locations with high soil micro-nutrient concentrations, yield was higher than at locations with low micro-nutrient concentrations, and was equal across the three pasture systems, regardless of fertilizer N treatment. Variation in micro-nutrient uptake/yield in the blue grass–legume system was predominantly explained by the soil molybdenum (Mo) concentration, possibly relating to the requirement for Mo in biological nitrogen fixation. There was, therefore, a trade-off in ploughing and re-seeding for higher yield, with the maintenance of SOM being important for herbage micro-nutrient content.
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Karpatschof, Benny, e Eva Helweg. "EN TILKNYTNING HINSIDES DØDEN - om det sørgende barns kamp for en fortsat tilknytning til en afdød far eller mor". Psyke & Logos 24, n. 2 (31 dicembre 2003): 33. http://dx.doi.org/10.7146/pl.v24i2.8805.
Abstract (sommario):
I artiklen analyseres sorgprocessen hos børn, der har mistet en forældre, som en kamp for at etablere en brudte tilknytning. Udgangspunktet er både empirisk, nemlig materialet fra en evaluering af en rådgivning for børn i sorg, og teoretisk, dels bogen Continuing Bonds (Klass et al. 1996), dels en teori om dannelsen af den personlige moral (Karpatschof, 1997 & 2000, 2003a). Et betydningsfuldt træk ved dette retableringsarbejde er inkarnationen af positive træk ved den afdøde forældre, altså valget af forælderen som forbillede. (OBS Artikel nr. 06, EN TILKNYTNING HINSIDES DØDEN af Benny Karpatschof og Eva Helweg er desværre ikke tilgængelig online (Red.))
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Zhou, Long, Lizhen Su, Lianya Zhang, Lu Zhang, Yi Zheng e Li Tang. "Effect of Different Types of Phosphate Fertilizer on Phosphorus Absorption and Desorption in Acidic Red Soil of Southwest China". Sustainability 14, n. 16 (12 agosto 2022): 9973. http://dx.doi.org/10.3390/su14169973.
Abstract (sommario):
The effects of different types of phosphate fertilization on the phosphorus (P) adsorption-desorption in low-P red soil remain unclear. A field plot location test was carried out, and fifteen red soil samples were collected at depths of 0–20 cm from five phosphate fertilizers (CK—no-phosphate, SSP—single superphosphate, CMP—calcium magnesium phosphate, MAP—monoammonium phosphate, and DAP—diammonium phosphate) after the maize was harvested to evaluate the soil physicochemical properties, P adsorption, and desorption characteristics. The structural equation model (SEM) and adjacent tree method (ABT) were used to quantitatively analyze the relative contribution of P adsorption and desorption. The yield, P accumulation, and the P use efficiency of maize were the highest under SSP and CMP treatments. The P adsorption amount was CK > DAP > MAP > CMP > SSP, and the P desorption amount was DAP > MAP > CMP > SSP > CK. Compared with the CK treatment, P adsorption of other P treatments reduced by an average of 21.4%, while P desorption increased by 154.8%. The effect of different types of phosphate fertilizers on soil P adsorption was mainly through regulation of soil organic matter (SOM) and Olsen P, and the effect on soil P desorption was mainly through regulation of SOM and CaCO3. Al2O3 had the greatest effect on P adsorption with a relative contribution rate of 31.52%, and SOM had the greatest effect on P desorption with a relative contribution rate of 53.04%. SSP and CMP treatments had an optimal matching with acidic red soil, which can promote P adsorption, effectively slow down P loss, improve P utilization, and increase crop yield.
34
Qiming, Liu, Li Yao, Ge Jian, Jiao Yupei e Cao Yinglan. "Soil Physico-chemical Properties and Microbial Activity in Ecological Restoration Red Soil Region of Subtropical Southern China". Recent Innovations in Chemical Engineering (Formerly Recent Patents on Chemical Engineering) 13, n. 1 (22 gennaio 2020): 72–80. http://dx.doi.org/10.2174/2405520412666190820111144.
Abstract (sommario):
Background and Objective: The objectives of this study were to investigate the effects of land use and land cover transitions on soil physico-chemical properties, and to comparatively study soil microbial activity in ecological restoration red soil region of subtropical southern China. Methods: A field experiment was conducted in a natural forest, four ecological restoration forests and an adjacent farmland. Based on the stable carbon isotopes of SOM, the δ13C values data confirm the 6 sites for soil sampling in this study were the ideal location for studying land cover transitions. The data showed that the soil physical, chemical and biological properties under the natural forest were significantly healthier than under cultivation. During forest re-growth on farmland, the ecological restoration time were 34, 26, 15 and 10a, respectively, and the SOM content, C/N, soil colony counts, soil basal respiration and soil enzyme activities significantly increased and approached values of virgin forest. Results & Conclusion: In general, the SOM content and soil microbial activities in ecological restoration forest were usually intermediate between the natural forest and farmland, and there was significant (P< 0.05) difference between forest and farmland. The results indicated that, because of appropriate climatic conditions of red soil subtropical southern China, the dynamic balance of soil ecosystems can be reconstructed and restored in several years or decades.
35
Frandsen, Finn. "Jørn Helder & Leif Pjetursson (red.): Modtageren som medproducent - nye tendenser i virksomhedskommunikation". MedieKultur: Journal of media and communication research 17, n. 32 (4 settembre 2001): 2. http://dx.doi.org/10.7146/mediekultur.v17i32.1173.
36
Furuseth, Sissel. "Natur som intellektuelt arbeidPeterRemienog ScottSlovic(red.).Nature and Literary StudiesCambridge University Press2022418 sider". Norsk litteraturvitenskapelig tidsskrift 27, n. 1 (2 maggio 2024): 52–55. http://dx.doi.org/10.18261/nlvt.27.1.6.
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Delica, Kristian. "Sociologisk refleksivitet og feltanalytisk anvendelse af etnografi – om Loïc Wacquants blik på urban marginalisering". Dansk Sociologi 22, n. 1 (29 marzo 2011): 27–45. http://dx.doi.org/10.22439/dansoc.v22i1.3474.
Abstract (sommario):
Artiklen fremstiller og diskuterer Loïc Wacquants tese om avanceret marginalisering som samlebetegnelse for og særtræk ved kontemporære vestlige storbyer. Den viser, hvordan Wacquant praktiserer Pierre Bourdieus sociologiske refleksivitet (den epistemiske refleksivitet) med udgangspunkt i historisk funderede studier af udviklingen af henholdsvis den amerikanske ghettos (the black belt) og de parisiske forstæder (the red belt). Der argumenteres for det første for, at Wacquants bidrag til bysociologien netop kan ses som en videreførelse af principperne i Bourdieus refleksive sociologi. For det andet argumenteres for, at Wacquant anvender en særlig bourdieuinspireret, feltanalytisk udgave af etnografi. Dette foreslås både som præcisering af den måde Wacquant arbejder med etnografiske metoder på i studier af avanceret marginalisering og som del af et bredere urbansociologisk forskningsprogram, der ligeledes skitseres. Denne distinkte udgave af etnografisk arbejde diskuteres op mod andre positioner i det etnografiske felt, hvorved Wacquants bidrag hertil skrives frem.
ENGELSK ABSTRACT:
Kristian Delica: Sociological Reflexivity and a Field Analytical Practice of Ethnography – Loïc Wacquant’s Perspective on Urban Marginality
This article discusses Loïc Wacquant’s thesis of advanced marginality, and shows how it contains both a general description of contemporary Western cities and crucial characteristics of these. Wacquant deploys Pierre Bourdieu’s sociological reflexivity – the so called epistemic reflexivity – in studying how the American ghetto (the black belt) and the French banliues (the red belt) developed historically. The article argues that Wacquant’s contributions to urban sociology can be seen as a continuation of the principles of Bourdieu’s reflexive sociology, and suggests that Wacquant deploys a field analytical usage of ethnography. This is analyzed as both an elucidation of the way Wacquant is working with ethnographic methods in studies of advanced marginalization, and as part of a broader urban sociological research program. Wacquant’s distinctive version of ethnographic work is contextualized in a discussion of other positions in the ethnographic field.
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Zacharko-Siembida, Anna, Jose Luis Valverde Piedra, Bolesław Strzałka e Marcin Bartłomiej Arciszewski. "Red kidney bean (Phaseolus vulgaris) lectin stimulation increases the number of enterochromaffin cells in the small intestine of suckling piglets". Bulletin of the Veterinary Institute in Pulawy 58, n. 2 (1 giugno 2014): 289–94. http://dx.doi.org/10.2478/bvip-2014-0044.
Abstract (sommario):
Abstract The quantities and distribution patterns of serotonin-immunoreactive (serotonin-IR) enterochromaffin cells (EC) were studied immunohistochemically in the small intestine of suckling piglets stimulated with red kidney bean lectin, and in nonstimulated, control animals. The co-expression patterns of serotonin with somatostatin (SOM) or corticotropin releasing-factor (CRF) were also studied. After the lectin treatment, the increased numbers of EC were noted in the duodenum of experimental animals. Lectin stimulation did not change the proportions of EC in the jejunum and ileum. In the duodenal epithelium of the lectin-stimulated piglets, the vast majority of serotonin-IR EC were distributed at the basis of crypts. After the lectin administration, the proportions of serotonin-IR/SOM-IR EC were statistically similar in all sections of the small intestine. No upregulation of CRF was found in duodenal, jejunal, and ileal EC of lectin-treated animals. The findings demonstrated that red kidney bean lectin increased the serotonin reservoir in the duodenum, and thus may be an effective stimulant of the gut maturation in suckling mammals.
39
Mouritsen, Flemming. "Refleksivitet og refleksionstyper i børns udtryksformer". BUKS - Tidsskrift for Børne- & Ungdomskultur 34, n. 60 (8 marzo 2023): 14. http://dx.doi.org/10.7146/buks.v34i60.136616.
Abstract (sommario):
Publ. i BUKS - Tidsskrift for Børne- og Ungdomskultur nr. 43 2001, s. 171-190. Også publiceret (med tilføjet indledning) under titlen »Æstetisk refleksivitet og refleksionstyper i børns former for narrative udtryk og leg – en analyse af rolleleg som fortælling«, i Jørgen Gleerup og Finn Wiedemann, red.: Pædagogisk forskning og udvikling, Odense: Syddansk Universitetsforlag 2003, s. 181-203.
40
Luo, Peisang, Zedong Long, Mei Sun, Qiufen Feng, Xibai Zeng, Hua Wang, Zunchang Luo e Geng Sun. "Long-Term Application of Pig Manure to Ameliorate Soil Acidity in Red Upland". Agriculture 13, n. 9 (19 settembre 2023): 1837. http://dx.doi.org/10.3390/agriculture13091837.
Abstract (sommario):
While the application of manure to improve soil quality has attracted attention, the effect of pig manure application rates on soil acidity remains poorly understood. In this study, we analyzed the changes and correlations between soil acidity, pH buffer capacity (pHBC), soil chemical properties, and crop yields after 8 years of pig manure application at different rates (i.e., 0, 7.5, 15, 30, and 45 Mg ha−1) in a red upland soil (Ultisol). With an increase in the application rates, the crop yields were 0.77–8.85 times higher; the pH was enhanced by 0.4–0.8 units; and the soil organic matter (SOM), pHBC, iron activation (Feo), exchangeable calcium (ExCa), and exchangeable magnesium (ExMg) contents increased by up to 74.1%, 92.7%, 36.7%, 62.2%, and 48.7%, respectively, whereas that of total exchangeable acid (ExAcid) decreased by 17.2–52.9%. The crop yields were positively related to the soil pH but negatively correlated with ExAcid. Redundancy analysis revealed ExAcid and pHBC were more sensitive than pH was to the other chemical indicators. ExAcid was negatively correlated with SOM and ExCa; pHBC was positively correlated with ExMg, TN, SOM, and Feo. In conclusion, the crop yield could be improved by adjusting the soil acidity characteristics, and the application of pig manure reduced the soil acidity, with an optimal application rate of 15 Mg·ha−1.
41
Gabriel, C. E., e L. Kellman. "Examining moisture and temperature sensitivity of soil organic matter decomposition in a temperate coniferous forest soil". Biogeosciences Discussions 8, n. 1 (14 febbraio 2011): 1369–409. http://dx.doi.org/10.5194/bgd-8-1369-2011.
Abstract (sommario):
Abstract. Temperature and moisture are primary environmental drivers of soil organic matter (SOM) decomposition, and the development of a better understanding fo their roles in this process through depth in soils is needed. The objective of this research is to independently assess the roles of temperature and moisture in driving heterotrophic soil respiration for shallow and deep soils in a temperate red spruce forest. Minimally disturbed soil cores from shallow (0–25 cm) and deep (25–50 cm) layers were extracted from a 20 yr old red spruce stand and were then transferred to a climate chamber where they were incubated for 3 months under constant and diurnal temperature regimes. Soils were subjected to different watering treatments representing a full range of water contents. Temperature, moisture, and CO2 surface flux were assessed daily for all soils and continuously on a subset of the microcosms. The results from this study indicate that shallow soils dominate the contribution to surface flux (90%) and respond more predictably to moisture than deep soils. An optimum moisture range of 0.15 to 0.60 water-filled pore space was observed for microbial SOM decomposition in shallow cores across which a relatively invariant temperature sensitivity was observed. For soil moisture conditions experienced by most field sites in this region, flux-temperature relationships alone can be used to reasonably estimate heterotrophic respiration, as in this range moisture does not alter flux, with the exception of rewetting events along the lower part of this optimal range. Outside this range, however, soil moisture determines SOM decomposition rates.
42
Haukelien, Heidi. "Red. Jens-Ivar Nergård, Piers Vitebsky: Kulturen som pasient. Uvanlige møter for vanlige folk." Norsk antropologisk tidsskrift 31, n. 03 (17 settembre 2020): 239–42. http://dx.doi.org/10.18261/issn.1504-2898-2020-03-08.
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Xu, Zhe, Xiaomin Zhao, Xi Guo e Jiaxin Guo. "Deep Learning Application for Predicting Soil Organic Matter Content by VIS-NIR Spectroscopy". Computational Intelligence and Neuroscience 2019 (29 novembre 2019): 1–11. http://dx.doi.org/10.1155/2019/3563761.
Abstract (sommario):
Deep learning is characterized by its strong ability of data feature extraction. This method can provide unique advantages when applying it to visible and near-infrared spectroscopy for predicting soil organic matter (SOM) content in those cases where the SOM content is negatively correlated with the spectral reflectance of soil. This study relied on the SOM content data of 248 red soil samples and their spectral reflectance data of 400–2450 nm in Fengxin County, Jiangxi Province (China) to meet three objectives. First, a multilayer perceptron and two convolutional neural networks (LeNet5 and DenseNet10) were used to predict the SOM content based on spectral variation and variable selection, and the outcomes were compared with that from the traditional back-propagation neural network (BPN). Second, the four methods were applied to full-spectrum modeling to test the difference to selected feature variables. Finally, the potential of direct modeling was evaluated using spectral reflectance data without any spectral variation. The results of prediction accuracy showed that deep learning performed better at predicting the SOM content than did the traditional BPN. Based on full-spectrum data, deep learning was able to obtain more feature information, thus achieving better and more stable results (i.e., similar average accuracy and far lower standard deviation) than those obtained through variable selection. DenseNet achieved the best prediction result, with a coefficient of determination (R2) = 0.892 ± 0.004 and a ratio of performance to deviation (RPD) = 3.053 ± 0.056 in validation. Based on DenseNet, the application of spectral reflectance data (without spectral variation) produced robust results for application-level purposes (validation R2 = 0.853 ± 0.007 and validation RPD = 2.639 ± 0.056). In conclusion, deep learning provides an effective approach to predict the SOM content by visible and near-infrared spectroscopy and DenseNet is a promising method for reducing the amount of data preprocessing.
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Berg, Björn, Charles McClaugherty, Amalia Virzo De Santo e Dale Johnson. "Humus buildup in boreal forests: effects of litter fall and its N concentration". Canadian Journal of Forest Research 31, n. 6 (1 giugno 2001): 988–98. http://dx.doi.org/10.1139/x01-031.
Abstract (sommario):
This synthesis paper presents a model for estimating the buildup of soil organic matter in boreal deciduous and coniferous forests. A basic model was developed using data from a well-studied Scots pine (Pinus sylvestris L.) forest (SWECON site) and based on limit values for litter decomposition and amounts of litter fall. A local validation gave a calculated humus accumulation that differed by 8% from the amount measured in the stand. This model was further validated using data for humus accumulated for 2984, 2081, and 1106 years, predicting an accumulation close to the measured amount, and for needle litter the missing fractions were 16, 17, and 6%, respectively, for the three groups. The limit value for litter decomposition is negatively related to the litter's initial N concentration; thus, N-rich litter should have a larger resistant fraction left than N poor. This relationship was validated using nine paired stands of monocultures: eight pairs of Scots pine and Norway spruce (Picea abies (L.) Karst.) and one pair of red alder (Alnus rubra Bong.) and Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco). The measured amount of SOM was related to foliar litter fall and its N concentration. In all cases the more N-rich litter gave in all cases the more N-rich Norway spruce litter gave a significantly higher accumulation of humus for Norway spruce in spite of a higher litter fall for Scots pine. Also, red alder gave more SOM than Douglas-fir and in an expected relation to the litter N concentration. A consequence of this would be that C sinks of different efficiencies or capacities would tend to accumulate SOM at different rates.
45
Zhang, Han, Liu, Li, Wang e Liang. "Distribution and Contamination Assessment of Soil Heavy Metals in the Jiulongjiang River Catchment, Southeast China". International Journal of Environmental Research and Public Health 16, n. 23 (23 novembre 2019): 4674. http://dx.doi.org/10.3390/ijerph16234674.
Abstract (sommario):
A total of 63 soil samples were collected from three soil profiles (yellow soil, red loam, red soil) from Jiulongjiang river catchment to investigate the distribution, controlling factors, and toxic risks of heavy metals, including Cr, Mn, Fe, Cu, Zn, Cd, Pb, and Ni. The results showed that Cr and Cd in soils were enriched. The relationships between heavy metals and soil properties were assessed by principal component analysis. The results indicated that soil organic matter (SOM) played a fundamental role in controlling Cd and Pb in yellow soil and red loam sites. The Cd was significantly correlated with Pb and Cu, and Cr, Zn, Ni, Fe displayed strong correlations with each other, however, no statistical correlation was found between Cd and Cr. The enrichment factor and geoaccumulation index analyses showed that the soils in the study area were contaminated by Cd. Potential ecological risk analyses indicated that Cd posed a considerable ecological risk in yellow soils, and posed a moderate ecological risk in red loams and red soils.
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Kuusela, Tommy, Inger Lövkrona, Anders Gustavsson, Håkan Jönsson, Gunnar Ternhag, Birgitta Svensson, Patrik Sandgren e Marie Steinrud. "Recensioner". Rig 106, n. 2 (1 giugno 2023): 105–26. http://dx.doi.org/10.61596/rig.v106i2.16120.
Abstract (sommario):
Recensioner av
Tora Wall: Folktrons väsen. Encyklopedi
Folktro. En besjälad värld. Huvudredaktörer Kurt Almqvist och Lotta Gröning
Kågeträskdagboken. En västerbottnisk dagbok 1891–1901 med kommentarer. Volym 2. Ann-CatrineEdlund (huvudredaktör), Lars-Erik Edlund & Ulf Lundström under medverkan av Birgitta Bjurman
Ulrica Söderlind: Cajsa Wargs kokkonst. Fyra gastronomer, mat, dryck och tillagning under svenskt 1700- tal
Gustaf Ankarcrona och bilden av Dalarna som svenskt ideal. Johan Knutsson (red.)
Manligt mode. En okänd historia. Ingrid Giertz-Mårtenson (red.)
Leif Runefelt: Några ögonblicks förundran. Marknaden för ambulerande underhållning i Sverige 1760–1880
Margareta Petersson: Kärlek, kvinnoroller och koloniala drömmar. Familjen Stephens livsöden på och bortom Huseby bruk
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Hove, Knut, Hans Staaland e Øyvind Pedersen. "Hexacyanoferrates and bentonite as binders of radiocaesium for reindeer". Rangifer 11, n. 2 (1 ottobre 1991): 43. http://dx.doi.org/10.7557/2.11.2.959.
Abstract (sommario):
<p>The effects of varying doses of caesium binders (Bentonite and several forms of iron-hexacyanoferrates) on radiocaesium accumulation in red blood cells and on radiocaesium transfer to urine and faeces were studied in feeding experiments with reindeer calves. The caesium binders were added to a ration of lichen (containing 9.5 kBq of 134Cs+137Cs originating from the Chernobyl accident) and fed together with a pelleted reindeer feed (RF-71) for 42 days. A 50% reduction in red blood cell radiocaesium concentration was obtained with a daily dose of 1 mg/kg body weigth of ammoniumironhexacyanoferrate (AFCF) and with 500 mg/kg of bentonite. Three mg/kg of AFCF or 2 g/kg of bentonite reduced both urinary excretion and RBC concentrations with more than 80%. It is concluded that iron-hexacyanoferrates, as a result of their high caesium binding capacity, are particularly useful as caesium binders for free ranging ruminants like the reindeer.</p><p>Hexacynoferrater og bentonitt som bindere av radiocesium i rein</p><p>Abstract in Norwegian / Sammendrag: Effekten av bentonitt og ulike typer jernhexacyanoferrater (Berlinerblått) på akkumulering av radioaktivt cesium i røde blodlegemer og på utskilling av radioaktivt cesium i urin ble undersøkt i foringsforsøk med reinkalver. Cesiumbinderne ble gitt daglig sammen med lav som inneholdt 9.5 kBq 134Cs+137Cs fra Tsjernobyl ulykken, og 1 kg reinfor (RF-71) i en periode på 42 dager. En daglig dose på 1 mg/kg kroppsvekt av ammoniumjernhexacyano-ferrat (AFCF) reduserte radiocesiuminnholdet i blodlegemer med 50%, mens en dose pa 500 mg/kg bentonitt var nødvendig for å oppnå samme effekt. Tre mg/kg AFCF eller 2 g/kg/bentonitt var nødvendig for å oppnå mer enn 80% reduksjon i radiocesium konsentrasjonen i blodlegemer og i radiocesium utskilling med urinen. På grunn av de små daglige mengder som kreves er jern-hexacyanoferratene spesielt velegnete som cesiumbindere for beitedyr.</p>
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Bieluczyk, Wanderlei, Marcos Gervasio Pereira, Roni Fernandes Guareschi, João Andrade Bonetti, Vanessa Aparecida Freó e Eduardo Carvalho Silva Neto. "Granulometric and oxidizable carbon fractions of soil organic matter in crop-livestock integration systems". Semina: Ciências Agrárias 38, n. 2 (2 maggio 2017): 607. http://dx.doi.org/10.5433/1679-0359.2017v38n2p607.
Abstract (sommario):
The identification of the labile and recalcitrant forms of soil organic matter (SOM) allows to rapidly define, or even predict if the management used favors increments or losses of carbon in the soil. Thus, the objective of this work was to assess the effects of different grazing intensities and soybean crops on the oxidizable and granulometric fractions of the SOM in a crop-livestock integration combined with no-tillage system (CLI-NTS), established in 2009 in the Goiás Federal University. The treatments consisted of three different pasture heights (0.25 m P25; 0.35 m P35; 0.45 m P45), and areas without grazing (AWG), and a native vegetation area of the Cerrado biome (NCA), adjacent to the experimental area, was evaluated as references and compared with the cultivated areas. Soil samples (Oxisol - USDA; typic distroferric Red Latosol - SiBCS) were collected in the layers 0.00-0.05; 0.05-0.10 0.10-0.20 and 0.20-0.40 m of each area, and arranged in a completely randomized experimental design with six replications. The soil total carbon was quantified (TC) by dry combustion. The SOM granulometry and oxidizable SOM were fractionated into particulate carbon (OCp), carbon bond with minerals (OCm) and four oxidizable fractions with increasing degrees of recalcitrance (F1 < F2 < F3 < F4). These soil attributes were evaluated at two different times, representing the post-pasture cycle (PP) and post-soybean crop (PC) periods. The lower contents of total soil carbon (TC) were found in the F1 and F3 fractions of the area without grazing, suggesting that the crop-livestock integration increases the organic matter content in the soil surface layer regardless of the pasture height. The areas without grazing and with different pasture heights in CLI had similar contents of OCp and OCm due to the experiment short time of implementation (3 years). The fractionation of the oxidizable SOM was more sensitive in differentiating the treatments, showing that the higher intensity of grazing used (P25) provided a better balance of carbon accumulation between the SOM labile and recalcitrant fractions.
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Lorenz, Marcel, Delphine Derrien, Bernd Zeller, Thomas Udelhoven, Willy Werner e Sören Thiele-Bruhn. "The linkage of 13C and 15N soil depth gradients with C:N and O:C stoichiometry reveals tree species effects on organic matter turnover in soil". Biogeochemistry 151, n. 2-3 (12 novembre 2020): 203–20. http://dx.doi.org/10.1007/s10533-020-00721-3.
Abstract (sommario):
AbstractThe knowledge of tree species dependent turnover of soil organic matter (SOM) is limited, yet required to understand the carbon sequestration function of forest soil. We combined investigations of 13C and 15N and its relationship to elemental stoichiometry along soil depth gradients in 35-year old monocultural stands of Douglas fir (Pseudotsuga menziesii), black pine (Pinus nigra), European beech (Fagus sylvatica) and red oak (Quercus rubra) growing on a uniform post-mining soil. We investigated the natural abundance of 13C and 15N and the carbon:nitrogen (C:N) and oxygen:carbon (O:C) stoichiometry of litterfall and fine roots as well as SOM in the forest floor and mineral soil. Tree species had a significant effect on SOM δ13C and δ15N reflecting significantly different signatures of litterfall and root inputs. Throughout the soil profile, δ13C and δ15N were significantly related to the C:N and O:C ratio which indicates that isotope enrichment with soil depth is linked to the turnover of organic matter (OM). Significantly higher turnover of OM in soils under deciduous tree species depended to 46% on the quality of litterfall and root inputs (N content, C:N, O:C ratio), and the initial isotopic signatures of litterfall. Hence, SOM composition and turnover also depends on additional—presumably microbial driven—factors. The enrichment of 15N with soil depth was generally linked to 13C. In soils under pine, however, with limited N and C availability, the enrichment of 15N was decoupled from 13C. This suggests that transformation pathways depend on litter quality of tree species.
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Thomas, Carl, Apostolos Voulgarakis, Gerald Lim, Joanna Haigh e Peer Nowack. "An unsupervised learning approach to identifying blocking events: the case of European summer". Weather and Climate Dynamics 2, n. 3 (12 luglio 2021): 581–608. http://dx.doi.org/10.5194/wcd-2-581-2021.
Abstract (sommario):
Abstract. Atmospheric blocking events are mid-latitude weather patterns, which obstruct the usual path of the polar jet streams. They are often associated with heat waves in summer and cold snaps in winter. Despite being central features of mid-latitude synoptic-scale weather, there is no well-defined historical dataset of blocking events. Various blocking indices (BIs) have thus been suggested for automatically identifying blocking events in observational and in climate model data. However, BIs show significant regional and seasonal differences so that several indices are typically applied in combination to ensure scientific robustness. Here, we introduce a new BI using self-organizing maps (SOMs), an unsupervised machine learning approach, and compare its detection skill to some of the most widely applied BIs. To enable this intercomparison, we first create a new ground truth time series classification of European blocking based on expert judgement. We then demonstrate that our method (SOM-BI) has several key advantages over previous BIs because it exploits all of the spatial information provided in the input data and reduces the dependence on arbitrary thresholds. Using ERA5 reanalysis data (1979–2019), we find that the SOM-BI identifies blocking events with a higher precision and recall than other BIs. In particular, SOM-BI already performs well using only around 20 years of training data so that observational records are long enough to train our new method. We present case studies of the 2003 and 2019 European heat waves and highlight that well-defined groups of SOM nodes can be an effective tool to diagnose such weather events, although the domain-based approach can still lead to errors in the identification of certain events in a fashion similar to the other BIs. We further test the red blocking detection skill of SOM-BI depending on the meteorological variable used to study blocking, including geopotential height, sea level pressure and four variables related to potential vorticity, and the 500 hPa geopotential height anomaly field provides the best results with our new approach. We also demonstrate how SOM-BI can be used to identify different types of blocking events and their associated trends. Finally, we evaluate the SOM-BI performance on around 100 years of climate model data from a pre-industrial simulation with the new UK Earth System Model (UKESM1-0-LL). For the model data, all blocking detection methods have lower skill than for the ERA5 reanalysis, but SOM-BI performs noticeably better than the conventional indices. Overall, our results demonstrate the significant potential for unsupervised learning to complement the study of blocking events in both reanalysis and climate modelling contexts.