Thematische Bibliographien / 378.2/4

Auswahl der wissenschaftlichen Literatur zum Thema „378.2/4“

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Veröffentlicht am 25. Juli 2024

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Valenzuela López, Marino, Leopoldo Partida Ruvalcaba, Tomás Díaz Valdés, Teresa De Jesús Velázquez Alcaraz, Germán Bojórquez Bojórquez und Tomás Enciso Osuna. „Respuesta del tomate cultivado en hidroponía con soluciones nutritivas en sustrato humus de lombriz-fibra de coco“. Revista Mexicana de Ciencias Agrícolas 5, Nr. 5 (14.02.2018): 807. http://dx.doi.org/10.29312/remexca.v5i5.903.

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El objetivo de este estudio fue conocer el efecto que induce la solución nutritiva Steiner al 100% de concentración nutrimental, así como las variaciones en la concentración de la misma (25 y 50%) de dicha concentración, en comparación con el testigo (sólo agua), aplicadas en mezclas de sustratos orgánicos a base de humus de lombriz y fibra de coco, en proporciones v:v de 25:75, 50:50 y 75:25. Con el tomate hibrido Imperial injertado con Multifort® tipo bola, de crecimiento indeterminado, durante el ciclo agrícola 2011-2012. Se estableció un experimento factorial 4 x 3 en un diseño experimental completamente al azar con cuatro repeticiones. Las variables de estudio fueron índice de verdor (determinada con SPAD 502), diámetro ecuatorial y polar de fruto, y rendimiento según la clasif icación de la norma oficial NMX-FF-031-1997. Se observaron incrementos en el índice de verdor de 43.1, 48.7 y 55.8% con las soluciones al 25, 50 y 100% de concentración nutrimental a los 150 ddt (días después del trasplante), en comparación con plantas irrigadas con agua; el diámetro ecuatorial de los frutos tuvo incrementos de 34.3-39.3% en el primer racimo, en comparación al de frutos en el testigo, en el segundo racimo fueron de 55.8-60.2%, y en el tercero de 360.8-412.7%; el diámetro polar de frutos del tercer racimo se incrementó 308.6, 334.4 y 324.8% con las respectivas soluciones al 25, 50 y 100%; mientras que con las mismas soluciones el rendimiento total se expresó con incrementos de 295.0, 378.2 y 394.7%, pero las mejores respuestas se dieron donde se aplicaron las soluciones al 50 y 100%.

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Eduar, Dionisius, Rosehan Rosehan und Sobron Yamin Lubis. „Pengaruh Variasi Sudut Kampuh V Terhadap Kekuatan Sambungan Stainless Steel 316 pada Pengelasan Tungsten Inert Gas“. Jurnal Teknik Industri Terintegrasi 6, Nr. 1 (23.04.2023): 279–85. http://dx.doi.org/10.31004/jutin.v6i1.16411.

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This study aims to determine the effect of variations in the V seam angle with TIG welding on the strength of the welding joints in each 316 stainless steel specimen and to find out how much the strength value of the welding joints is in stainless steel 316 after a tensile test is carried out. Types of research methods and data collection will start from 316 stainless steel plate welding with TIG welding. Welding will be carried out with a variation of the V seam angle of 30o, 45o, and 60o at each 120 A welding current and 15L/min argon discharge. After welding, the stainless steel will be cut according to ASTM E8 standard sizes and followed by a tensile test to determine the effect of variations in seam angles on the strength of the welded joints. Based on the results of the test data obtained, it shows that (1) the tensile stress value is directly proportional to the strain. The greater the tensile stress value, the greater the strain value will be. (2) The results of the tensile test show that the greater the seam angle, the higher the resulting tensile stress. The highest tensile strength was the specimen with a seam angle of 60o which was 511.4 Mpa, while the lowest tensile strength was the specimen with a seam angle of 30o which was 378.2 Mpa. (3) The results of the tensile test show that the greater the seam angle V, the greater the tensile stress so that the strain is also greater. The highest strain for specimens with a seam angle of V 60o is 7.9, while the lowest strain is for specimens with a seam angle of V 30o which is 2.9. (4) The results of the calculation of tensile stress and strain obtained the highest modulus of elasticity for the V 60o seam corner specimen, namely 15358.358, while the lowest value was for the V 30o seam corner specimen, namely 12629.189.

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Holsten, E. H., und J. Hard. „EFFICACY OF BACILLUS THURINGIENSIS BERLINER FOR SUPPRESSING POPULATIONS OF LARGE ASPEN TORTRIX IN ALASKA“. Canadian Entomologist 117, Nr. 5 (Mai 1985): 587–91. http://dx.doi.org/10.4039/ent117587-5.

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AbstractThe efficacy of Bacillus thuringiensis was evaluated against the large aspen tortrix on trembling aspen in Alaska. A concentration of 4 × 109 IU per 378.5 L of water was applied to infested trees using a hydraulic sprayer. Treatments with Dipel 4L and Thuricide 32LV resulted in population reductions of 69 and 76% respectively. Both products provided significant foliage protection. Timing of treatment is critical to successful population suppression and foliage protection.

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Würflinger, A., und W. Weissflog. „DTA and p VT Measurements on 4-cyanobenzyI-5- (4-n-octyloxybenzoyloxy)-2-undecyloxybenzoate up to 250 MPa and 383 K“. Zeitschrift für Naturforschung A 55, Nr. 11-12 (01.12.2000): 936–40. http://dx.doi.org/10.1515/zna-2000-11-1219.

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Abstract The phase diagram of 4-cyanobenzyl-5-(4-«-octyloxybenzoyloxy)-2-undecyloxybenzoate (4CNOUB) has been established with differential thermal analysis (DTA). The pressure range for the smectic A phase is limited, resulting in a triple point at 165 MPa and 378.26 K. p, Vm, T data have been measured for the smectic and istotropic phases of 4CNOUB between 243 and 383 K and up to 250 MPa. The volume changes accompanying the crystal - smectic and scmectic - isotropic transitions have been deter-mined. The corresponding enthalpy changes have been calculated using the Clausius-Clapeyron equation. The p, Vm, T data enable also to estimate the volume entropy for the smectic - isotropic transition and the volume dependence of the clearing temperature.

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Khanh, Tran Bao. „OPTIMAL CONDITIONS FOR EXOPOLYSACCHARIDE PRODUCTION BY Lactobacillus plantarum T10“. Vietnam Journal of Science and Technology 54, Nr. 4A (21.03.2018): 40. http://dx.doi.org/10.15625/2525-2518/54/4a/11976.

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Exopolysaccharide (EPS) production ability of Lactobacillus plantarumT10 was studied. The supplement of some sugars (lactose, saccharose, and glucose) gave the positive effects on EPS production of L. plantarum T10, in which the addition of lactose 4 % resulted in the most efficiency for EPS yield (274.83 μg/mL). The addition of 0.4 % of yeast extract into culture medium with 4 % lactose provided the highest EPS yields compared to other nitrogen sources (peptone, beef extract), which were 378.32 mg/mL. The optimal conditions for EPS production of L. plantarum T10 in MRS broth with 4 % of lactose and 0.4 % yeast extract supplement were also studied. The results indicated that the highest EPS yield (417.11 mg/L) was obtained in the conditions of 106 CFU/ml initial cell density, temperature of 35 oC, pH 5.5 and 48 h incubation.

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Ospina-García, Miguel Ángel, Saieth Baudilio Chaves-Pabón und Luis Miguel Jiménez-Sicachá. „Mejoramiento de subrasantes de tipo arcilloso mediante la adición de escoria de acero“. REVISTA DE INVESTIGACIÓN, DESARROLLO E INNOVACIÓN 11, Nr. 1 (15.08.2020): 185–96. http://dx.doi.org/10.19053/20278306.v11.n1.2020.11692.

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El presente trabajo evalúa el comportamiento de mezclas de suelo arcilloso mediante la adición de esco-ria de acero, comparando con los criterios de calidad para ser una subrasante vial. El comportamiento de la mezcla de escoria de acería con arcilla caolinita, se estableció con una matriz de dosificación de au-mento gradual, en porcentajes de: 25, 50 y 75%, a través del tamiz N°4. Los resultados indican que la escoria de acería funciona en materiales cohesivos, reduciendo la plasticidad hasta un 0%, y aumentan-do el valor del California Bearing Ratio, CBR, en un 378.92%. Se concluye que la escoria de acero, es un excelente complemento para mejorar las propiedades físicas y mecánicas de una subrasante de arcilla caolinita. En una primera aproximación, la dosificación más recomendada es de un 25%, debido a que la disminución en la resistencia a la compresión e índice de plasticidad no fue tan alta como en las otras dosificaciones, pero si aumenta el índice CBR y la densidad.

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Abbott, Isabella A. „WILLIAM RANDOLPH TAYLOR (1895–1990). An appreciative tribute“. Phycologia 30, Nr. 4 (Juli 1991): 378–80. http://dx.doi.org/10.2216/i0031-8884-30-4-378.1.

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Pavia, Henrik, Gunilla B. Toth, Annelie Lindgren und Per Åberg. „Intraspecific variation in the phlorotannin content of the brown alga Ascophyllum nodosum“. Phycologia 42, Nr. 4 (Juli 2003): 378–83. http://dx.doi.org/10.2216/i0031-8884-42-4-378.1.

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Chettry, Momita, Rijan Ojha und Bhabindra Niroula. „A report of Siwalik forest around Letang Raja-Rani wetland, Morang, eastern Nepal“. Our Nature 19, Nr. 1 (14.12.2021): 37–45. http://dx.doi.org/10.3126/on.v19i1.41232.

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Species composition, phytosociological status and soil characteristics of Siwalik forest occurring around Raja-Rani wetland, Letang municipality, eastern Nepal was studied. A total of 47 tree species belonging to 40 genera and 26 families were reported. Dominant and co-dominant trees were Shorea robusta (IVI=133.4) and Schima wallichii (IVI=70.6), respectively. In the forest total tree density, basal cover area, seedling density, fallen dead density and dead standing density were 378.4 trees ha-1, 163.7 m2 ha-1, 105250 individual ha-1, 4 trees ha-1 and 1.6 trees ha-1, respectively. Irregular girth class distribution and high stump density (136.8 tree ha-1) denote disturbance. Soil physicochemical characteristics were: acidic soil (pH 4.8), moisture (12.5%), water holding capacity (50.05%), bulk density (1.17 g cm-3), porosity (0.55%), humus (8.6%), organic carbon (0.52%), nitrogen (0.1%), phosphorus (33 kg ha-1), and potassium (300 kg ha-1). Regulating human encroachment to ensure natural regeneration of species to maintain the viability of the Letang Raja-Rani wetland site and integrity of the local ecosystem is strongly recommended.

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Marković, Ana, Mariyana Atanasova, Rossen Buyukliev, Adriana Bakalova, Andrija Šmelcerović und Emiliya Cherneva. „3’-Methyl-4-thio-1H-tetrahydropyranspiro-5’-hydantoin platinum complex as a novel deoxyribonuclease I inhibitor“. Pharmacia 71 (03.07.2024): 1–7. http://dx.doi.org/10.3897/pharmacia.71.e126246.

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Deoxyribonuclease I (DNase I) is one of the main nucleases involved in deoxyribonucleic acid (DNA) degradation during apoptosis. It catalyzes the hydrolytic cleavage of DNA, producing 5‘-oligonucleotides. The inhibition of DNase I may serve as an important mechanism for protecting DNA against premature degradation during cell damage. Fourteen hydantoin-containing compounds, including two newly synthesized and seven previously synthesized metal complexes, along with five previously synthesized hydantoin ligands, were evaluated in vitro for their inhibitory properties against bovine pancreatic DNase I. As a result, the 3’-methyl-4-thio-1H-tetrahydropyranspiro-5’-hydantoin platinum complex (8) inhibited the enzyme with an IC50 value of 110.20 ± 24.20 µM, a potency 3-fold greater than that of the reference crystal violet (IC50 = 378.27 ± 47.75 µM). To understand the binding mode and mechanism of inhibition of compound 8 with DNase I, molecular docking calculations were performed. The analysis revealed that compound 8 interacts with the most important catalytic residues of DNase I. To the best of our knowledge, this is the first report of a platinum complex inhibiting DNase I.

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