Journal articles: 'Strain capacity'

1

Tasdemir, M. A., F. D. Lydon, and B. I. G. Barr. "The tensile strain capacity of concrete." Magazine of Concrete Research 48, no. 176 (September 1996): 211–18. http://dx.doi.org/10.1680/macr.1996.48.176.211.

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Wang, Li, Shiqi Xiao, Xiaoming Chen, Shilin Chen, Shanqiang Wang, Chao Wang, Yunlai Tang, and Faqin Dong. "ytiB and ythA Genes Reduce the Uranium Removal Capacity of Bacillus atrophaeus." International Journal of Molecular Sciences 20, no. 7 (April 10, 2019): 1766. http://dx.doi.org/10.3390/ijms20071766.

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Two Bacillus atrophaeus strains, the first being a highly stress-resistant ATCC 9372 strain and the Ua strain identified from a chromium mine by our lab, differ in their abilities to tolerate and remove Uranium (VI) from contaminated water. An increase in U(VI) concentration in growth media led to a decrease in the tolerance and bio-remedial capacity of both strains. However, under high concentrations of U(VI) in the growth media, the ATCC 9372 strain demonstrated a higher tolerance and a higher removal capacity than the Ua strain. Two approaches, transcriptome sequencing and transgenic technology, were used to elucidate the relationship between particular genes within these two strains and their U(VI) removal capacity. Sequencing confirmed the expression of two genes unique to the Ua strain, previously designated ytiB and ythA. They encode putative proteins that show the highest levels of identity to carbonic anhydrase and cytochrome bd terminal oxidase I, respectively. Using the pBE-S DNA vector, ytiB and ythA were transformed into the ATCC 9372 strain of Bacillus atrophaeus. Under a U(VI) concentration of 120 mg/L, the removal rates of the transgenic ATCC 9372-ytiB and ATCC 9372-ythA strains decreased by 7.55% and 7.43%, respectively, compared to the removal rate of the control strain transformed with empty plasmid. The results suggest that both ythA and ytiB genes have a negative influence on the uranium removing capacity of Bacillus atrophaeus. This finding will help to elucidate the molecular mechanisms of uranium removal by bacteria.

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Rodarte, J. R., R. D. Hubmayr, D. Stamenovic, and B. J. Walters. "Regional lung strain in dogs during deflation from total lung capacity." Journal of Applied Physiology 58, no. 1 (January 1, 1985): 164–72. http://dx.doi.org/10.1152/jappl.1985.58.1.164.

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Regional lung distortion during deflation from total lung capacity to functional residual capacity (FRC) in intact supine and prone anesthetized dogs was determined from the displacement of multiple metallic markers embedded in the lung parenchyma. Distortion was expressed as strain (epsilon), which is related to fractional length changes. In the supine position, transverse strain (epsilon yy) was larger than vertical strain (epsilon xx) and cephalocaudal strain (epsilon zz) in the upper lobe. The FRC of the lower lobe was smaller than FRC of the upper lobe and all strains were larger, but epsilon zz increased most and became equal to epsilon yy. In the prone position, epsilon yy was largest in all upper lobes and in three of four lower lobes. Strains and volumes of the upper and lower lobes were similar. The upper and lower lobes rotated slightly around different axes, indicating that interpleural fissures allow additional degrees of freedom for the lungs to conform to the thoracic cavity. In the prone position, there were no consistent gradients of strain or volume. These results indicate that, in determining the regional distribution of FRC in the recumbent dog, in addition to the effect of gravity on the lung, there are important interactions between lung and thoracic cavity shapes.

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Krausova, Gabriela, Antonin Kana, Ivana Hyrslova, Iva Mrvikova, and Miloslava Kavkova. "Development of Selenized Lactic Acid Bacteria and their Selenium Bioaccummulation Capacity." Fermentation 6, no. 3 (September 21, 2020): 91. http://dx.doi.org/10.3390/fermentation6030091.

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Selenized lactic acid bacteria (LAB) represent potentially safe and effective sources of selenium (Se), essential for human health, as lactic acid fermentation improves Se bioavailability and reduces its toxicity. LAB are generally recognized as safe (GRAS) and widely used in fermented dairy products. To facilitate selenized LAB implementation as a functional food, we developed and characterized new Se-enriched strains based on the food industry commercial strains Streptococcus thermophilus CCDM 144 and Enterococcus faecium CCDM 922A as representatives of two LAB genera. We evaluated Se bioaccumulation capacity, Se biotransformation and growth ability in the presence of different sodium selenite concentrations (0–50 mg/L), and antioxidant properties (2, 2-diphenyl-1-picrylhydrazyl (DPPH) method) and cell surface hydrophobicity between Se-enriched and parental strains in vitro. Sodium selenite addition did not negatively influence growth of either strain; thus, 50 mg/L was chosen as the optimal concentration based on strain accumulation capacity. Selenization improved the antioxidant properties of both strains and significantly increased their cell surface hydrophobicity (p < 0.05). To our knowledge, this represents the first report of Se-enriched strain hydrophobicity as well as the first on Se speciation in families Enterococcaceae and Streptococcaceae. Moreover, both tested strains demonstrated good potential for Se-enrichment, providing a foundation for further in vitro and in vivo studies to confirm the suitability of these Se-enriched strains for industrial applications.

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Gontijo, Ronan P., Cleube A. Boari, Aldrin V. Pires, Martinho A. Silva, Luíza R. A. Abreu, and Paulo G. M. A. Martins. "Carcass traits and meat quality of quails from both sexes and eight distinct strains." Animal Production Science 57, no. 10 (2017): 2141. http://dx.doi.org/10.1071/an15854.

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Our objective was to evaluate carcass traits and meat quality of quails from different strains and both sexes pertaining to three breeding-improvement programs. Quails from seven meat-type strains (UFV1, UFV2, UFV3, EV1, EV2, LF1 and LF2) and from one egg-laying (Japanese quail) strain (LAY) were slaughtered at 35 days of age. A completely randomised 8 (strain) × 2 (sex) factorial design was used for data analysis. Bodyweight, hot carcass weight and breast (musculus pectoralis major and m. pectoralis minor) and legs (thigh and drumstick) weights and their respective yields were determined. Ultimate pH, colour measurements, water-holding capacity, cooking loss and shear force were assessed. No difference in ultimate pH, shear force and hue was observed. The UFV3 strain had the greatest bodyweight at slaughter. The UFV3 strain had the greatest hot carcass weight in both sexes. The heaviest breasts were observed in both sexes of the UFV3 strain and in males of the UFV2 strain. The UFV3 quails had greater leg weight. The hot carcass yields of meat-type strains were greater than that of the LAY strain. The UFV3 and LAY females furnished a greater breast yield than did male quails. For males, the UFV1 strain had a greater yield of breast than that of LAY quails. The LAY quails presented the greatest yields of leg. The LAY quails had the least luminance, and the greatest water-holding capacity, cooking loss, red and yellow intensity, and chroma. In summary, meat obtained from meat-type strains had a greater water-holding capacity, lower cooking loss and greater luminance than that of the LAY strain. In addition, the meat-type strains grew appreciably faster, but the difference in yields of breast and leg meat between meat and layer strains was small. We conclude that meat-type strains, especially the UFV3, are more appropriate for enterprises focussed on meat production.

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Bazin, R., D. Ricquier, F. Dupuy, J. Hoover-Plow, and M. Lavau. "Thermogenic and lipogenic activities in brown adipose tissue of I-strain mice." Biochemical Journal 231, no. 3 (November 1, 1985): 761–64. http://dx.doi.org/10.1042/bj2310761.

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The thermogenic capacity of brown adipose tissue has been investigated in I-strain mice to determine whether this tissue could play a role in the lower efficiency of food utilization reported in this strain of mice. (1) As compared with C57BL mice (a control strain), interscapular-brown-adipose-tissue weight and lipid percentage were decreased by 40% and 13% respectively in I-strain mice. (2) Mitochondrial protein content and cytochrome c oxidase activity were similar in the two strains, but the number of mitochondrial GDP-binding sites and uncoupling-protein content were increased by 2-fold in I-strain mice. (3) Fatty acid synthetase and citrate-cleavage enzyme (units/mg of protein) were 3-fold higher in the brown adipose tissue of I-strain mice. These results indicate that I-strain mice possess a very active brown adipose tissue. This enhanced capacity of energy dissipation in brown adipose tissue could contribute to the decreased capacity of I-strain mice to store adipose tissue.

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Geoffroy, Valérie, Geneviève Payette, Florian Mauffrey, Livie Lestin, Philippe Constant, and Richard Villemur. "Strain-level genetic diversity ofMethylophaga nitratireducenticrescensconfers plasticity to denitrification capacity in a methylotrophic marine denitrifying biofilm." PeerJ 6 (April 23, 2018): e4679. http://dx.doi.org/10.7717/peerj.4679.

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BackgroundThe biofilm of a methanol-fed, fluidized denitrification system treating a marine effluent is composed of multi-species microorganisms, among whichHyphomicrobium nitrativoransNL23 andMethylophaga nitratireducenticrescensJAM1 are the principal bacteria involved in the denitrifying activities. Strain NL23 can carry complete nitrate (NO${}_{3}^{-}$) reduction to N2, whereas strain JAM1 can perform 3 out of the 4 reduction steps. A small proportion of other denitrifiers exists in the biofilm, suggesting the potential plasticity of the biofilm in adapting to environmental changes. Here, we report the acclimation of the denitrifying biofilm from continuous operating mode to batch operating mode, and the isolation and characterization from the acclimated biofilm of a new denitrifying bacterial strain, named GP59.MethodsThe denitrifying biofilm was batch-cultured under anoxic conditions. The acclimated biofilm was plated onMethylophagaspecific medium to isolate denitrifyingMethylophagaisolates. Planktonic cultures of strains GP59 and JAM1 were performed, and the growth and the dynamics of NO${}_{3}^{-}$, nitrite (NO${}_{2}^{-}$) and N2O were determined. The genomes of strains GP59 and JAM1 were sequenced and compared. The transcriptomes of strains GP59 and JAM1 were derived from anoxic cultures.ResultsDuring batch cultures of the biofilm, we observed the disappearance ofH. nitrativoransNL23 without affecting the denitrification performance. From the acclimated biofilm, we isolated strain GP59 that can perform, likeH. nitrativoransNL23, the complete denitrification pathway. The GP59 cell concentration in the acclimated biofilm was 2–3 orders of magnitude higher thanM. nitratireducenticrescensJAM1 andH. nitrativoransNL23. Genome analyses revealed that strain GP59 belongs to the speciesM. nitratireducenticrescens. The GP59 genome shares more than 85% of its coding sequences with those of strain JAM1. Based on transcriptomic analyses of anoxic cultures, most of these common genes in strain GP59 were expressed at similar level than their counterparts in strain JAM1. In contrast to strain JAM1, strain GP59 cannot reduce NO${}_{3}^{-}$ under oxic culture conditions, and has a 24-h lag time before growth and NO${}_{3}^{-}$ reduction start to occur in anoxic cultures, suggesting that both strains regulate differently the expression of their denitrification genes. Strain GP59 has the ability to reduce NO${}_{2}^{-}$ as it carries a gene encoding a NirK-type NO${}_{2}^{-}$ reductase. Based on the CRISPR sequences, strain GP59 did not emerge from strain JAM1 during the biofilm batch cultures but rather was present in the original biofilm and was enriched during this process.DiscussionThese results reinforce the unique trait of the speciesM. nitratireducenticrescensamong theMethylophagagenus as facultative anaerobic bacterium. These findings also showed the plasticity of denitrifying population of the biofilm in adapting to anoxic marine environments of the bioreactor.

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8

Harrison, Judith, Alexandre Jamet, Cecilia I. Muglia, Ghislaine Van de Sype, O. Mario Aguilar, Alain Puppo, and Pierre Frendo. "Glutathione Plays a Fundamental Role in Growth and Symbiotic Capacity of Sinorhizobium meliloti." Journal of Bacteriology 187, no. 1 (January 1, 2005): 168–74. http://dx.doi.org/10.1128/jb.187.1.168-174.2005.

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ABSTRACT Rhizobia form a symbiotic relationship with plants of the legume family to produce nitrogen-fixing root nodules under nitrogen-limiting conditions. We have examined the importance of glutathione (GSH) during free-living growth and symbiosis of Sinorhizobium meliloti. An S. meliloti mutant strain (SmgshA) which is unable to synthesize GSH due to a gene disruption in gshA, encoding the enzyme for the first step in the biosynthesis of GSH, was unable to grow under nonstress conditions, precluding any nodulation. In contrast, an S. meliloti strain (SmgshB) with gshB, encoding the enzyme involved in the second step in GSH synthesis, deleted was able to grow, indicating that γ-glutamylcysteine, the dipeptide intermediate, can partially substitute for GSH. However, the SmgshB strain showed a delayed-nodulation phenotype coupled to a 75% reduction in the nitrogen fixation capacity. This phenotype was linked to abnormal nodule development. Both the SmgshA and SmgshB mutant strains exhibited higher catalase activity than the wild-type S. meliloti strain, suggesting that both mutant strains are under oxidative stress. Taken together, these results show that GSH plays a critical role in the growth of S. meliloti and during its interaction with the plant partner.

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9

Suzuki, N., T. Kubo, and S. Igi. "Strain capacity and material properties required for pipelines." Welding International 22, no. 7 (July 2008): 417–20. http://dx.doi.org/10.1080/09507110802285581.

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Hoeher, Robin, Thomas Raidt, Maik Rose, Frank Katzenberg, and Joerg C. Tiller. "Recoverable strain storage capacity of shape memory polyethylene." Journal of Polymer Science Part B: Polymer Physics 51, no. 13 (May 7, 2013): 1033–40. http://dx.doi.org/10.1002/polb.23301.

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Hirshberg, A. J., M. C. Moyer, and R. M. Rickenbach. "Surface-Casing Strain Capacity for North Slope Operations." SPE Drilling Engineering 3, no. 03 (September 1, 1988): 289–95. http://dx.doi.org/10.2118/16103-pa.

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Chen, Yan-fei, Juan Zhang, Hong Zhang, Xin Li, Jing Zhou, and Jing Cao. "Ultimate bending capacity of strain hardening steel pipes." China Ocean Engineering 30, no. 2 (April 2016): 231–41. http://dx.doi.org/10.1007/s13344-016-0014-x.

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Loporcaro, G., S. Pampanin, and M. V. Kral. "Estimating Plastic Strain and Residual Strain Capacity of Earthquake-Damaged Steel Reinforcing Bars." Journal of Structural Engineering 144, no. 5 (May 2018): 04018027. http://dx.doi.org/10.1061/(asce)st.1943-541x.0001982.

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Gross, G., J. Snel, J. Boekhorst, M. Smits, and M. Kleerebezem. "Biodiversity of mannose-specific adhesion in Lactobacillus plantarum revisited: strain-specific domain composition of the mannose-adhesin." Beneficial Microbes 1, no. 1 (March 1, 2010): 61–66. http://dx.doi.org/10.3920/bm2008.1006.

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Recently, we have identified the mannose-specific adhesin encoding gene (msa) of Lactobacillus plantarum. In the current study, structure and function of this potentially probiotic effector gene were further investigated, exploring genetic diversity of msa in L. plantarum in relation to mannose adhesion capacity. The results demonstrate that there is considerable variation in quantitative in vitro mannose adhesion capacity, which is paralleled by msa gene sequence variation. The msa genes of different L. plantarum strains encode proteins with variable domain composition. Construction of L. plantarum 299v mutant strains revealed that the msa gene product is the key-protein for mannose adhesion, also in a strain with high mannose adhering capacity. However, no straightforward correlation between adhesion capacity and domain composition of Msa in L. plantarum could be identified. Nevertheless, differences in Msa sequences in combination with variable genetic background of specific bacterial strains appears to determine mannose adhesion capacity and potentially affects probiotic properties. These findings exemplify the strain-specificity of probiotic characteristics and illustrate the need for careful and molecular selection of new candidate probiotics.

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Liu, Xian Lan, Chu Ming Liu, Wen Yu Zhang, Jian Hua Luo, and Su Min Zeng. "Microstructures and Damping Capacity of Mg-6Zn-0.5Zr Alloy." Advanced Materials Research 557-559 (July 2012): 1624–28. http://dx.doi.org/10.4028/www.scientific.net/amr.557-559.1624.

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The dynamic mechanical analyzer (DMA) was applied to investigate the damping properties of Mg-6Zn-0.6Zr alloys. The results show that the as-cast Mg-6Zn-0.6Zr alloy exhibits higher strain amplitude independent damping performance than that of as-homogenized. The strain amplitude dependent damping of the as-homogenized has the best damping performance with the strain amplitude from 3×10-5 to 6×10-4, and the as-extruded is the lowest. When the strain amplitude exceeded 6×10-4, the as-extruded has the best damping capacity all the time within the experimental strain amplitude, and all the alloys reach the high damping capacity. Two critical strain amplitude points were detected in the alloy as-extruded and as-homogenized. The damping peak value is 0.0192 with the strain amplitude of 1.5×10-3 presented in the alloy as-extruded.

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Courtney, Sean M., and Michael P. Massett. "Identification of exercise capacity QTL using association mapping in inbred mice." Physiological Genomics 44, no. 19 (October 1, 2012): 948–55. http://dx.doi.org/10.1152/physiolgenomics.00051.2012.

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There are large interindividual differences in exercise capacity. It is well established that there is a genetic basis for these differences. However, the genetic factors underlying this variation are undefined. Therefore, the purpose of this study was to identify novel putative quantitative trait loci (QTL) for exercise capacity by measuring exercise capacity in inbred mice and performing genome-wide association mapping. Exercise capacity, defined as run time and work, was assessed in male mice ( n = 6) from 34 strains of classical and wild-derived inbred mice performing a graded treadmill test. Genome-wide association mapping was performed with an efficient mixed-model association (EMMA) algorithm to identify QTL. Exercise capacity was significantly different across strains. Run time varied by 2.7-fold between the highest running strain (C58/J) and the lowest running strain (A/J). These same strains showed a 16.5-fold difference in work. Significant associations were identified for exercise time on chromosomes 1, 2, 7, 11, and 13. The QTL interval on chromosome 2 (∼168 Mb) contains one gene, Nfatc2, and overlaps with a suggestive QTL for training responsiveness in humans. These results provide phenotype data on the widest range of inbred strains tested thus far and indicate that genetic background significantly influences exercise capacity. Furthermore, the novel QTLs identified in the current study provide new targets for investigating the underlying mechanisms for variation in exercise capacity.

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Zhu, Han, Lin Hu Yang, and Lin Yuan. "Flexural Capacity of Singly Reinforced CRC Beams(Part-I)." Advanced Materials Research 168-170 (December 2010): 1810–14. http://dx.doi.org/10.4028/www.scientific.net/amr.168-170.1810.

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Crumb rubber concrete (CRC) is made by adding rubber crumbs into conventional concrete, and many studies show that ultimate compressive strains for CRC are much bigger than those for conventional concrete. This article undertakes a mechanical analysis of a reinforced beam based on a proposed CRC stress-strain relationship. The results show that, assuming identical geometrical and material conditions, CRC beam can support more external moment than what conventional concrete beams can do.

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Preising, Julia, David Philippe, Marita Gleinser, Hua Wei, Stephanie Blum, Bernhard J. Eikmanns, Jan-Hendrik Niess, and Christian U. Riedel. "Selection of Bifidobacteria Based on Adhesion and Anti-Inflammatory Capacity In Vitro for Amelioration of Murine Colitis." Applied and Environmental Microbiology 76, no. 9 (March 12, 2010): 3048–51. http://dx.doi.org/10.1128/aem.03127-09.

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ABSTRACT Adhesion and anti-inflammatory properties of eight strains of bifidobacteria were tested using the intestinal epithelial cell lines Caco-2, T84, and HT29. Two strains were selected for further assessment of their anti-inflammatory capacity in two murine models of colitis. In vivo results confirmed the high anti-inflammatory capacity of a Bifidobacterium bifidum strain.

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Qian, Shunzhi, and Victor C. Li. "Simplified Inverse Method for Determining the Tensile Strain Capacity of Strain Hardening Cementitious Composites." Journal of Advanced Concrete Technology 5, no. 2 (2007): 235–46. http://dx.doi.org/10.3151/jact.5.235.

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Guan, Hongbo, Yifei Xia, Jinli Wang, and Arsene Hugo Mbonyintege. "Influences of Slenderness and Eccentricity on the Mechanical Properties of Concrete-Filled GFRP Tube Columns." Polymers 13, no. 17 (August 31, 2021): 2968. http://dx.doi.org/10.3390/polym13172968.

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The existence of either eccentricity or slenderness has a significant effect on the mechanical properties of a structure or member. These properties can change the working mechanism, failure mode, and bearing capacity of the structure or member. A concrete-filled, glass fibre-reinforced, polymer tube composite column has the same problem. We carried out experiments on the influences of eccentricity and slenderness on the mechanical properties of concrete-filled, glass fibre-reinforced, polymer tube composite columns. The experimentally recorded stress–strain relationships are presented graphically, and the ultimate axial stresses and strains and the FRP tube hoop strains at rupture were tabulated. The results indicate that the influences of slenderness and eccentricity on the composite columns were significant with regard to the axial strain, hoop strain, ultimate bearing capacity, lateral displacement, and failure mode. Based on the existing research literature and the results reported in this paper, the bearing capacity formula of a composite slender column under an eccentric load was established. The theoretical results were in good agreement with the experimental results.

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Koch, Lauren Gerard, Cheryl L. Green, Abraham D. Lee, Joseph E. Hornyak, George T. Cicila, and Steven L. Britton. "Test of the principle of initial value in rat genetic models of exercise capacity." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 288, no. 2 (February 2005): R466—R472. http://dx.doi.org/10.1152/ajpregu.00621.2004.

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An inverse relationship between initial level of physical capacity and the magnitude of response to training is termed the principle of initial value. We tested the operation of this principle under experimental conditions of minimal genetic and environmental variation. Inbred rat strains previously identified as genetic models of low [Copenhagen (COP)] and high [Dark Agouti (DA)] intrinsic (untrained) exercise capacity were trained for 8 wk on a treadmill using two disparate protocols: 1) a relative mode where each rat exercised daily according to its initial capacity, and 2) an absolute mode where both strains received the same amount of training independent of initial capacity. Response to exercise was the change in running capacity as estimated by meters run to exhaustion before and after training. When trained with the relative mode, COP rats gained 88 m (+21%; NS) whereas DA rats increased distance run by 228 m (+36%; P < 0.001). When each strain trained with the same absolute amount of training, the COP strain showed essentially no change (−6 m, −2%) and the DA strain gained 325 m (+49%; P < 0.009). Differences in response to exercise between the COP and DA could not be explained by body mass differences, oxidative enzyme activity (citrate synthase or ATP), or spontaneous behavioral activity. Our data demonstrate that genetic factors causative of high response to exercise are not uniquely associated with genetic factors for low intrinsic capacity and thus are not in accord with the principle of initial value.

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Poggioli, George J., Christopher Keefer, Jodi L. Connolly, Terence S. Dermody, and Kenneth L. Tyler. "Reovirus-Induced G2/M Cell Cycle Arrest Requires ς1s and Occurs in the Absence of Apoptosis." Journal of Virology 74, no. 20 (October 15, 2000): 9562–70. http://dx.doi.org/10.1128/jvi.74.20.9562-9570.2000.

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ABSTRACT Serotype-specific differences in the capacity of reovirus strains to inhibit proliferation of murine L929 cells correlate with the capacity to induce apoptosis. The prototype serotype 3 reovirus strains Abney (T3A) and Dearing (T3D) inhibit cellular proliferation and induce apoptosis to a greater extent than the prototype serotype 1 reovirus strain Lang (T1L). We now show that reovirus-induced inhibition of cellular proliferation results from a G2/M cell cycle arrest. Using T1L × T3D reassortant viruses, we found that strain-specific differences in the capacity to induce G2/M arrest, like the differences in the capacity to induce apoptosis, are determined by the viral S1 gene. The S1 gene is bicistronic, encoding the viral attachment protein ς1 and the nonstructural protein ς1s. A ς1s-deficient reovirus strain, T3C84-MA, fails to induce G2/M arrest, yet retains the capacity to induce apoptosis, indicating that ς1s is required for reovirus-induced G2/M arrest. Expression of ς1s in C127 cells increases the percentage of cells in the G2/M phase of the cell cycle, supporting a role for this protein in reovirus-induced G2/M arrest. Inhibition of reovirus-induced apoptosis failed to prevent virus-induced G2/M arrest, indicating that G2/M arrest is not the result of apoptosis related DNA damage and suggests that these two processes occur through distinct pathways.

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Niedźwiedzka-Rystwej, P., B. Tokarz-Deptuła, and W. Deptuła. "White and red blood cell picture in rabbits experimentally infected with strains of the rabbit haemorrhagic disease (RHD) virus without or with variable haemagglutination capacity." Polish Journal of Veterinary Sciences 19, no. 4 (December 1, 2016): 865–76. http://dx.doi.org/10.1515/pjvs-2016-0108.

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Abstract The aim of the study was to establish if haemagglutination of rabbit haemorrhagic disease virus (RHDV) affects haematological picture of peripheral blood in rabbits and the pathogenicity of the virus. The study analyzed white and red blood cell picture in rabbits experimentally infected with two non-haemagglutinating (HA-) RHDV strains (Frankfurt and Asturias) and one strain with variable haemagglutination capacity (HA+/−) (Hagenow). Studies with HA− and HA +/− are rare and relate only to 4 HA− strains (2 RHDV: BLA and Rainham; 2 RHDVa: Pv97 and 9905) and 1 HA+/− RHDV strain: ŻD, where less changes in haematological indices and less pathogenicity were observed. We found that changes caused by HA− Frankfurt strain were related to the number of neutrophils and thrombocytes, while in HA− strain Asturias, in thrombocytes and leukocytes. Changes evoked by HA+/− Hagenow strain pertained to the number of eosinophils, thrombocytes, leukocytes, monocytes, and concentration of hemoglobin. Mortality caused by the Frankfurt strain was 100% between 36 and 48 h post infection (p.i.), while that caused by Asturias strain was 100% between 24 and 36 h p.i., and that observed in case of Hagenow strain was 90% between 36 and 48 h p.i. The changes in haematological picture caused by the HA− and HA+/− RHDV strains were less intensive than those found in case of the HA+ RHDV strains, which cannot be confirmed for pathogenicity, and is not in line with the existing hypothesis suggesting higher pathogenicity in HA+ viruses.

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Burd, H. J., and S. Frydman. "Bearing capacity of plane-strain footings on layered soils." Canadian Geotechnical Journal 34, no. 2 (April 1, 1997): 241–53. http://dx.doi.org/10.1139/t96-106.

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Beighley, Patricia E., Mair Zamir, Robert J. Wentz, Lauren G. Koch, Steven L. Britton, and Erik L. Ritman. "Vascularity of myocardium and gastrocnemius muscle in rats selectively bred for endurance running capacity." Physiological Genomics 45, no. 3 (February 1, 2013): 119–25. http://dx.doi.org/10.1152/physiolgenomics.00110.2012.

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We tested the hypothesis that changes in the arteriolar branching architecture contributed to increased running capacity of rats subjected to two-way artificial selection for intrinsic aerobic endurance treadmill running capacity resulting in strains of low-capacity and high-capacity endurance rats. Hearts and gastrocnemius muscles were harvested from each strain, and the microvasculature's branching geometry measured from micro-CT images. The vascular branching geometry of the hearts and skeletal muscle from the high capacity was indistinguishable from low-capacity rats. Our hypothesis was not supported. Neither remodeling nor an increase in arteriolar microvasculature branching appears to play a role in the enhanced performance of the high capacity rats. We are led to speculate that endothelial tolerance for shear stress and/or increased coupling of myocardial muscle fiber metabolic-to-contractile function is increased in the high-capacity runner strain to the effect of allowing either higher flow rate per unit volume of muscle or more efficient use of oxygen and nutrients in the high-capacity endurance rats.

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Anh, Đỗ Tuấn, Nguyễn Hữu Tiền, and Nguyễn Ngọc Châu. "The pathogenicity and reproduction capability of five epn strains on white grubs (Alissonotum impressicolle Arrow) in the laboratory conditions." Vietnam Journal of Biotechnology 15, no. 2 (April 20, 2018): 277–84. http://dx.doi.org/10.15625/1811-4989/15/2/12344.

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Five entomopathogenic nematode strains, included 3 strains of the genus Steinernema, e.g. S-PQ16, SS-CP12 and S-TX1, and two strains of genus Heterorhabditis indica, e.g. H-CB3452 and H-KT3987 were evaluated on virulence and reproduction capacity on white grubs of black scarab (Alissonotum impressicolle Arrow) a serious pest damaging in the soils of sugarcane and many economic crops in Western Highland, particular Lam Dong province. The experiments were evaluated the pathogenicity virulence of EPN strains through establishing index as lethal concentration of 50 mortality percentage of host insects (LC50). While the reproduction capacity of EPN strains were established yield of infective juveniles (IJs) that produced inside insect cadavers. The bioassays on virulence of S-PQ16, S-CP12, S-TX1, H-CB3452 and H-KT3987 were revealed the mortality of white grubs as 93.3%, 86.7%; 93.3%; 86.7% and 73.3%, respectively, at the highest concentration of 5,000 IJs/insect. The 50% mortality of five indigenous strains was high levels with LC50 values ranged between 1,362 and 2,725 IJs. These values are also similar with our results previously on white grubs with some other EPN indigenous strains. It is also suitable with some evaluation bioassays of EPN on white grubs reported from China and Australia. The IJs yields from the insect cadavers were obtained up to 31×103 IJs with the strain S- CP12; 59.7×103 IJs with the S-PQ16 strain and 73.5×103 IJs with the strain S-TX1. Particularly, the highest yields were obtained from two strains of Heterorhabditis indica, viz. 125.1×103 IJs with H-KT3987 strain and 112.6×103 IJs with H-CB3452 strains. Respect to high virulence and also high reproduction capacity all these EPN strains should be satisfied the biological agents that can be used for biological control of white grubs of pests are living in the soil environment.

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Trapko, Wojciech, and Tomasz Trapko. "LOAD-BEARING CAPACITY OF COMPRESSED CONCRETE ELEMENTS SUBJECTED TO REPEATED LOAD STRENGTHENED WITH CFRP MATERIALS." Journal of Civil Engineering and Management 18, no. 4 (September 11, 2012): 590–99. http://dx.doi.org/10.3846/13923730.2012.701664.

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This paper presents the results of experimental investigations of compressed concrete elements behaviour subjected to monotonic and cyclic load strengthened with CFRP materials. Two types of CFRP strengthening were applied during the experiment – longitudinal strips and/or transverse sheets. The results obtained allowed to draw conclusions concerning the possibility of representing a stress-strain monotonic curve with a curve of cyclic strains. The influence of load history on strain parameters of the investigated elements was found. The influence of the strengthening pattern and the state of effort on Young modulus and residual strains was analyzed. Moreover, observations were made of the disadvantageous effect of cyclic loads on strengthening durability, which lead to deformation or partial delamination of external CFRP reinforcement.

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Sepúlveda, Sebastián, Carla Duarte-Nass, Mariella Rivas, Laura Azócar, Andrés Ramírez, Javiera Toledo-Alarcón, Leopoldo Gutiérrez, David Jeison, and Álvaro Torres-Aravena. "Testing the Capacity of Staphylococcus equorum for Calcium and Copper Removal through MICP Process." Minerals 11, no. 8 (August 21, 2021): 905. http://dx.doi.org/10.3390/min11080905.

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This research focused on the evaluation of the potential use of a soil-isolated bacteria, identified as Staphylococcus equorum, for microbial-induced calcite precipitation (MICP) and copper removal. Isolated bacteria were characterized considering growth rate, urease activity, calcium carbonate precipitation, copper tolerance as minimum inhibitory concentration (MIC) and copper precipitation. Results were compared with Sporosarcina pasteurii, which is considered a model bacteria strain for MICP processes. The results indicated that the S. equorum strain had lower urease activity, calcium removal capacity and copper tolerance than the S. pasteurii strain. However, the culture conditions tested in this study did not consider the halophilic feature of the S. equorum, which could make it a promising bacterial strain to be applied in process water from mining operations when seawater is used as process water. On the other hand, copper removal was insufficient when applying any of the bacteria strains evaluated, most likely due to the formation of a copper–ammonia complex. Thus, the implementation of S. equorum for copper removal needs to be further studied, considering the optimization of culture conditions, which may promote better performance when considering calcium, copper or other metals precipitation.

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Östblom, Anna, Ingegerd Adlerberth, Agnes E. Wold, and Forough L. Nowrouzian. "Pathogenicity Island Markers, Virulence DeterminantsmalXandusp, and the Capacity ofEscherichia coliTo Persist in Infants' Commensal Microbiotas." Applied and Environmental Microbiology 77, no. 7 (February 11, 2011): 2303–8. http://dx.doi.org/10.1128/aem.02405-10.

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ABSTRACTVirulence-associated genes in bacteria are often located on chromosomal regions, termed pathogenicity islands (PAIs). Several PAIs are found inEscherichia colistrains that cause extraintestinal infections, but their role in commensal bowel colonization is unknown. Resident strains are enriched in adhesins (P fimbriae and type 1 fimbriae), capsular antigens (K1 and K5), hemolysin, and aerobactin and mostly belong to phylogenetic group B2. Here, we investigated whether six pathogenicity islands and the virulence determinantsmalXanduspare associated with fitness ofE. coliin the infant bowel microbiota.E. colistrains isolated from stools of 130 Swedish infants during the first year of life were examined for their carriage of PAI markers,malX, anduspby PCR. Carriage was related to strain persistence: long-term colonizers (≥12 months) carried significantly more of PAI II from strain CFT703 (IICFT703), IV536,and IIJ96andmalXanduspthan intermediate colonizers (1 to 11 months) and transient strains (<3 weeks). The accumulation of PAI markers in each individual strain correlated positively with its time of persistence in the colon. Phylogenetic group B2 accounted for 69% of long-term colonizers, 46% of intermediate colonizers and 14% of transient strains. These results support the hypothesis that some bacterial traits contributing to extraintestinal infections have in fact evolved primarily because they increase the fitness ofE. coliin its natural niche, the colon; accordingly, they may be regarded as fitness islands in the gut.

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Krell, W. S., and J. R. Rodarte. "Effects of chest wall on volume and strain patterns in canine lungs." Journal of Applied Physiology 58, no. 4 (April 1, 1985): 1055–60. http://dx.doi.org/10.1152/jappl.1985.58.4.1055.

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Lobar functional residual capacity-to-total lung capacity ratios (FRC/TLC) and strains in five supine anesthetized dogs were determined from volumes and side lengths of tetrahedra formed by multiple intraparenchymal markers whose positions were determined roentgenographically. Strain is related to fractional changes in length of elements in a Cartesian coordinate system and was used to describe parenchymal distortion. Volumes and strain patterns were compared in three states: intact dogs, after transection of forelimb structures to relieve traction on the chest wall, and in dogs' excised lungs. Removing traction (NT) decreased the plethysmographically determined FRC and the upper-to-lower lobe ratio (UL/LL) for FRC/TLC. The ratio in the NT state was more like the ratio in the excised lungs (UL/LL approximately equal to 1) than in the intact dog (UL/LL greater than 1). Strain patterns were similar between the intact and the NT states, indicating no lobar shape change at FRC between these two states. Strain in the excised lungs differed greatly from strains in the intact and NT states. We conclude that forelimb traction alters volume distribution between lobes and that lung-chest wall interactions are important in determining volume and strain patterns.

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Zhang, Shuang, Lan Wei Zhang, and Xue Han. "Screening of Lactobacillus delbruekii Subsp. Bulgaricus with Weak Post-Acidification Capacity by Natural and Induced Mutation." Advanced Materials Research 393-395 (November 2011): 1417–20. http://dx.doi.org/10.4028/www.scientific.net/amr.393-395.1417.

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To derive new starter culture strains with weak post-acidification capacity,Lactobacillus delbruekii subsp. bulgaricusLY were screened by natural screening and inducing screening treated with ultraviolet and diethyl sulfate. Then treated strains were inoculated into low pH MRS medium and skim milk at 37°C for 24h, respectively. The mutants that could grow in skim milk but did not grow in low pH MRS medium were selected strains with weak post-acidification capacity. The mutants were preserved and their generation stabilities were tested. The natural screening, diethyl sulfate and ultraviolet treated mutants showed 5.1%, 5.9% and 11.9% lower post-acidification capacity than original strain at 25°C, respectively. The mutants showed genetically stable post-acidification capacity.

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Oder, Martina, and Rok Fink. "Biofilm formation capacity of Bacillus cereus on silicone, polyethylene terephthalate, Teflon, and aluminium food contact materials." Sanitarno inženirstvo International Journal of Sanitary Engineering Research 13, no. 1 (December 1, 2019): 4–11. http://dx.doi.org/10.2478/ijser-2019-0002.

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AbstractBiofilms on food contact materials represent public health issues because they are resistant to cleaning and disinfection. This study aims to assess the Bacillus cereus biofilm formation capacity on silicone, polyethylene terephthalate, Teflon, and aluminium food contact materials. The biofilm biomass was analysed with the crystal violet assay method. We used the standard strain B. cereus CCM 2010, wild strain B. cereus 100 and spores of those two strains. The results show that both the vegetative form the bacteria and it spores form large amounts of biofilm on silicone, followed by polyethylene terephthalate, Teflon, and aluminium. More detailed analysis has shown that spores form more biomass on all materials in comparison to the vegetative form and that the standard strains form low levels of biofilm in contrast to the wild strains. Selecting proper material with the lowest biofilm formation potential can prevent or reduce food contamination and consequently increase food safety.

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KOCH, LAUREN GERARD, STEVEN L. BRITTON, JOHN C. BARBATO, DAVID W. RODENBAUGH, and STEPHEN E. DiCARLO. "Phenotypic differences in cardiovascular regulation in inbred rat models of aerobic capacity." Physiological Genomics 1, no. 2 (August 31, 1999): 63–69. http://dx.doi.org/10.1152/physiolgenomics.1999.1.2.63.

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Koch, Lauren Gerard, Steven L. Britton, John C. Barbato, David W. Rodenbaugh, and Stephen E. DiCarlo. Phenotypic differences in cardiovascular regulation in inbred rat models of aerobic capacity. Physiol. Genomics 63–69, 1999.—The Dark Aouti (DA) inbred strain of rats has superior aerobic treadmill running capacity compared with the Copenhagen (COP) strain of inbred rats. This difference in aerobic capacity provides a model to explore the genetic basis of variation in this trait. The present study evaluated intermediate phenotypic differences between 10 male COP inbred rats and 10 male DA inbred rats that might contribute to the difference in aerobic capacity between the strains. Five autonomically regulated cardiovascular variables were evaluated during rest or exercise by measuring the response to autonomic antagonists. The DA rat had enhanced autonomic function for the regulation of peripheral blood flow and cardiac output. Specifically, at rest the DA rats had significantly more sympathetic (123 ± 8 vs. 99 ± 7 beats/min) and parasympathetic (35 ± 5 vs. 12 ± 3 beats/min) tonus for heart rate control and more sympathetic support of blood pressure (70 ± 7 vs. 38 ± 6 mmHg) compared with the COP rats. During three graded levels of treadmill exercise the DA rats had higher blood pressures (16% on average) and higher heart rates (4% on average) relative to the COP rats. In addition, the DA rats had a 27% greater heart weight-to-body weight ratio compared with the COP strain of rats (3.63 ± 0.08 vs. 2.85 ± 0.07 g/kg). All five of these intermediate phenotypes could participate as variables causative of the difference in treadmill running capacity between the DA and COP strains of rats.

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Ersoy, U., A. T. Tankut, and M. Uzumeri. "The influence of strain history and strain gradient on confined concrete." Canadian Journal of Civil Engineering 14, no. 3 (June 1, 1987): 336–41. http://dx.doi.org/10.1139/l87-053.

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This paper outlines the results of tests performed to study the effect of strain gradient, strain history, and initial precracking on the efficiency of confinement in reinforced-concrete columns. To this end, five reinforced-concrete specimens with closely spaced ties have been tested under combined flexure and axial load.Two of the specimens were used as control specimens, subjected only to a strain gradient. The remaining three specimens were precracked using different loading schemes and then tested under a combination of flexure and axial load. Two of these specimens were tested with repeated loading.The test results revealed that precracking lowered both the flexural rigidity and the ultimate capacity of the specimens. No significant differences were observed due to the type of loading used to initially crack the specimens. Repetition of loading did not seem to affect the ultimate capacity of the specimens.Comparison of the test results with four analytical models for confined concrete showed that the models that predicted the behaviour of the control specimens accurately, overestimated the capacities of the precracked specimens. The Thompson and Park concrete model accurately predicted the behaviour of the specimens tested with repeated loading. Key words: reinforced concrete, confined concrete, confinement, columns, cyclic loading, precracked column, experimental.

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Shegay, Alex V., Christopher J. Motter, Kenneth J. Elwood, and Richard S. Henry. "Deformation Capacity Limits for Reinforced Concrete Walls." Earthquake Spectra 35, no. 3 (August 2019): 1189–212. http://dx.doi.org/10.1193/080118eqs193m.

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The use of deformation capacity limits is becoming increasingly common in seismic design and assessment of reinforced concrete (RC) walls. Deformation capacity limits for RC walls in existing design and assessment documents are reviewed using a comprehensive database. It is found that the existing models are inconsistent and do not account for variation in deformation capacity with changes in the ratio of neutral axis depth to wall length ( c/ L w) and ratio of transverse reinforcement spacing to longitudinal bar diameter ( s/ d b) at the wall end region. A new mechanics-based model considering strain limits on the concrete and reinforcement is recommended. Concrete compressive strain limits for different levels of wall end region detailing are selected based on curvature ductilities for the walls in the database. Reinforcement tensile strain is limited based on a model for bar buckling. The proposed model, which accounts for c/ L w and s/ d b, is shown to have less dispersion and more accuracy than existing models when compared against experimental data and provides consistency between assessment and design provisions.

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Klein, M., K. Schoppel, N. Amvrossiadis, and M. Mach. "Strain-Specific Neutralization of Human Cytomegalovirus Isolates by Human Sera." Journal of Virology 73, no. 2 (February 1, 1999): 878–86. http://dx.doi.org/10.1128/jvi.73.2.878-886.1999.

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ABSTRACT Induction of an effective antibody response against human cytomegalovirus (HCMV) is an important defense mechanism since it is potentially capable of neutralizing infectious viruses. We have analyzed the extent of HCMV strain-specific neutralization capacity in human sera. Nine recent HCMV isolates and their corresponding sera were investigated in cross-neutralization assays. We observed differences, independent of the overall neutralization capacity, in the 50% neutralization titers of the sera against individual strains, differences that ranged from 8-fold to more than 60-fold. For one isolate, complete resistance to neutralization by two human sera was observed. The neutralization capacity of human sera was not influenced by the presence of various concentrations (up to 100-fold excess) of noninfectious envelope glycoproteins, an inherent contamination of virus preparations from recent HCMV isolates. This indicated that the decisive parameter for neutralization is the titer of the neutralizing antibodies and that neutralization is largely independent of the concentration of virus. Analysis with transplant patients revealed that during primary infection strain-specific and strain-common antibodies are produced asynchronously. Thus, our data demonstrate that the induction of strain-specific neutralizing antibodies is a common event during infection with HCMV and that it might have important implications for the course of the infection and the development of anti-HCMV vaccines.

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Al-Dhabi, Naif Abdullah, Galal Ali Esmail, Abdul-Kareem Mohammed Ghilan, and Mariadhas Valan Arasu. "Optimizing the Management of Cadmium Bioremediation Capacity of Metal-Resistant Pseudomonas sp. Strain Al-Dhabi-126 Isolated from the Industrial City of Saudi Arabian Environment." International Journal of Environmental Research and Public Health 16, no. 23 (November 29, 2019): 4788. http://dx.doi.org/10.3390/ijerph16234788.

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In this study, 23 bacterial strains were isolated from a Cadmium (Cd) contaminated soil in the industrial city, Riyadh of Saudi Arabia. Among these isolates six strains were found to withstand cadmium contamination and grow well. From the six isolates Pseudomonas sp. strain Al-Dhabi-122–127 were found to resist cadmium toxicity to a higher level. The isolates were subjected to biochemical and 16S rDNA gene sequence characterization to confirm their identification. The bacterial strain Al-Dhabi-124 showed 1.5 times higher Cd-degrading activity than Al-Dhabi-122 and Al-Dhabi-123, and Al-Dhabi-126 exhibited 3.5 times higher Cd-degrading activity, higher than the other strains. An atomic absorption spectrophotometer study showed that the strain Al-Dhabi-126 absorbed Cd, and that the bacterial strain Al-Dhabi-126 was found to tolerate cadmium level up to 2100 µg/mL. The bacterial strain Al-Dhabi-126 showed a maximum Cd removal efficacy at pH between 6.0 and 8.0. The efficacy decreased sharply after an increase in pH (9.0). An optimum temperature of 50 °C and pH 6.0 were found to be effective for the Cd removal process by the isolate. The study indicated that the bacterial strain Al-Dhabi-126 can be used effectively for the bioremediation of heavy metals like cadmium, a major toxic pollutant in industrial effluents.

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McInnes, A., P. Holford, and J. E. Thies. "Characterisation of dry and mucoid colonies isolated from Australian rhizobial inoculant strains for Medicago species." Australian Journal of Experimental Agriculture 45, no. 3 (2005): 151. http://dx.doi.org/10.1071/ea03125.

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The presence of dry and mucoid colonies in cultures of rhizobial strains used in the production of commercial Australian inoculants is of concern for quality assurance because of the possibility of altered capacity for nodulation and nitrogen fixation by the different colony types. In this study, single colony isolates obtained from dry and mucoid colonies present in commercial cultures of Sinorhizobium meliloti were investigated to identify stability in culture, genetic identity and changes in exopolysaccharide (EPS) production, nodulation and nitrogen fixation. The 2 strains studied were WSM688 and WSM826 (Australian inoculant strains for annual and perennial medics, respectively), both of which produced only mucoid colonies on agar media when originally isolated from nodules. Dry and mucoid single colony isolates from the ‘mother cultures’ of the 2 strains exhibited stable colony phenotypes during successive subculturing in our laboratory and were shown to be most closely related to S. meliloti using 16S rRNA partial sequencing. All isolates produced at least 1 of 3 exopolysaccharides (succinoglycan, EPS II and K antigen) that are required for successful nodulation of Medicago species by S. meliloti strains, as indicated by nodulation of host legumes. Strain WSM826 isolates probably produce succinoglycan, as shown by similarity to the succinoglycan-producing strain Rm1021 in a calcofluor binding assay. In contrast to published work, there was no evidence that loss of mucoidy in dry colony isolates of either strain was associated with the presence of an insertion sequence element in the expR gene that inhibits EPS II production. For strain WSM688, dry and mucoid isolates were identical by PCR fingerprinting and showed a similar capacity to nodulate and fix nitrogen with the target host legume M. truncatula in glasshouse tests. In contrast, strain WSM826 mucoid isolates produced PCR fingerprints that were different from each other and from the WSM826 dry colony isolates. Dry and mucoid colonies may have arisen from substantial genetic change or through contamination of cultures by other S. meliloti strains. One WSM826 mucoid isolate (826-3) produced significantly lower shoot dry weight when inoculated onto both the target host M. sativa and non-target host M. truncatula, even though the capacity to nodulate both hosts was retained. This suggests that this isolate was affected in its nitrogen fixation capacity. Further research is required to identify the origin and extent of colony variation in commercial S. meliloti cultures.

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Kessi-Pérez, Eduardo, Jennifer Molinet, Verónica García, Omayra Aguilera, Fernanda Cepeda, María López, Santiago Sari, et al. "Generation of a Non-Transgenic Genetically Improved Yeast Strain for Wine Production from Nitrogen-Deficient Musts." Microorganisms 8, no. 8 (August 6, 2020): 1194. http://dx.doi.org/10.3390/microorganisms8081194.

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The yeast Saccharomyces cerevisiae is the main species responsible for the process that involves the transformation of grape must into wine, with the initial nitrogen in the grape must being vital for it. One of the main problems in the wine industry is the deficiency of nitrogen sources in the grape must, leading to stuck or sluggish fermentations, and generating economic losses. In this scenario, an alternative is the isolation or generation of yeast strains with low nitrogen requirements for fermentation. In the present study, we carry out a genetic improvement program using as a base population a group of 70 strains isolated from winemaking environments mainly in Chile and Argentina (F0), making from it a first and second filial generation (F1 and F2, respectively) based in different families and hybrids. It was found that the trait under study has a high heritability, obtaining in the F2 population strains that consume a minor proportion of the nitrogen sources present in the must. Among these improved strains, strain “686” specially showed a marked drop in the nitrogen consumption, without losing fermentative performance, in synthetic grape must at laboratory level. When using this improved strain to produce wine from a natural grape must (supplemented and non-supplemented with ammonium) at pilot scale under wine cellar conditions, a similar fermentative capacity was obtained between this strain and a widely used commercial strain (EC1118). However, when fermented in a non-supplemented must, improved strain “686” showed the presence of a marked floral aroma absent for EC1118 strain, this difference being probably a direct consequence of its different pattern in amino acid consumption. The combination of the capacity of improved strain “686” to ferment without nitrogen addition and produce floral aromas may be of commercial interest for the wine industry.

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YAÑEZ-OCAMPO, GUSTAVO, MARTHA E. MORA-HERRERA, ARNOLDO WONG-VILLARREAL, DENISSE M. DE LA PAZ-OSORIO, NADIA DE LA PORTILLA-LÓPEZ, JORGE LUGO, ROCIO VACA-PAULÍN, and PEDRO DEL ÁGUILA. "Isolated Phosphate-Solubilizing Soil Bacteria Promotes In vitro Growth of Solanum tuberosum L." Polish Journal of Microbiology 69, no. 3 (September 8, 2020): 357–65. http://dx.doi.org/10.33073/pjm-2020-039.

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The capacity of four bacterial strains isolated from productive soil potato fields to solubilize tricalcium phosphate on Pikovskaya agar or in a liquid medium was evaluated. A bacterial strain was selected to evaluate in vitro capacity of plant-growth promotion on Solanum tuberosum L. culture. Bacterial strain A3 showed the highest value of phosphate solubilization, reaching a 20 mm-diameter halo and a concentration of 350 mg/l on agar and in a liquid medium, respectively. Bacterial strain A3 was identified by 16S rDNA analysis as Bacillus pumilus with 98% identity; therefore, it is the first report for Bacillus pumilus as phosphate solubilizer. Plant-growth promotion assayed by in vitro culture of potato microplants showed that the addition of bacterial strain A3 increased root and stems length after 28 days. It significantly increased stem length by 79.3%, and duplicated the fresh weight of control microplants. In this paper, results reported regarding phosphorus solubilization and growth promotion under in vitro conditions represent a step forward in the use of innocuous bacterial strain biofertilizer on potato field cultures.

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Karim Salmani, Bita, Mohammad Ali Amoozegar, Hamid Babavalian, Hamid Tebyanian, and Fatemeh Shakeri. "Removing Lead from Iranian Industrial Wastewater." International Letters of Natural Sciences 57 (August 2016): 79–88. http://dx.doi.org/10.18052/www.scipress.com/ilns.57.79.

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Metals and chemicals have been increased in industrial processes which they contain a high level of toxic heavy metals and cause a lot of disadvantages for the environment and human health .Biosorption of Pb (П) ions has been studied from aqueous solutions in a batch system by using a bacterial strain isolated from petrochemical wastewaters. Strain 8-I was selected to study the impact of different factors on removal rate. According to morphological, physiological and biochemical characterizations of the strain and in comparison with other studies the strain was tentatively identified as Bacillus sp strain8-I. The maximum Lead biosorption capacity of 8-I isolate was determined to be 41.58 % at pH 4.0 with 80 mg/l concentration in 48 hours equilibrium time. The comparison between the biosorption capacity of live (45.50 mg/g), heat inactivated (30.23 mg/g) and NaN3 pretreated biomass (26.86 mg/g) were indicated that the ability of live biomass for both of active and passive uptake of lead.

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Brooks, J. J., E. W. Bennett, and P. L. Owens. "Influence of lightweight aggregates on thermal strain capacity on concrete." Magazine of Concrete Research 39, no. 139 (June 1987): 60–72. http://dx.doi.org/10.1680/macr.1987.39.139.60.

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Wee, T. H., H. R. Lu, and S. Swaddiwudhipong. "Tensile strain capacity of concrete under various states of stress." Magazine of Concrete Research 52, no. 3 (June 2000): 185–93. http://dx.doi.org/10.1680/macr.2000.52.3.185.

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Ciavarella, Domenico, Claudia Cianci, Michele Laurenziello, Giuseppe Troiano, Francesco De Cillis, Michele Tepedino, Graziano Montaruli, Vincenzo Grassia, Lorenzo Lo Muzio, and Carmine Pappalettere. "Comparison of the Stress Strain Capacity between Different Clear Aligners." Open Dentistry Journal 13, no. 1 (January 31, 2019): 41–47. http://dx.doi.org/10.2174/1874210601913010041.

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Background: The rife use of aesthetic appliance in orthodontic treatment requires the study of the properties of the materials they are made of. Objective: The aim of the present study was to evaluate the dimensional stability of clear aligners made of three different materials after the application of in-vivo dynamic stress and in-vitro static stress. Methods: Three different aligners made of different materials (PET-G; PET; SmartTrack®), prepared on the dental arch of the same patient, were tested. For each material, three aligner samples were manufactured: one to be used in-vivo, one to be tested in-vitro, and one to be used as a control. To evaluate the effects of the dynamic stress produced in-vivo, each aligner was worn by a single patient 22 hours per day, followed by a wash-out period of two weeks. To evaluate the effects of static stress, each aligner was exposed to the in-vitro continuous force of 50N. The tested and control aligners were scanned, then linear measurements were taken to evaluate their dimensional stability after different types of stresses. Results: PET seems to have the lowest percentage of deformation; PET-G and SmartTrack® showed a reduced deformation going from the posterior to the anterior area. The contact with human saliva induces a greater deformation. Conclusion: Different materials show different behavior following application of static stresses and dynamic stresses in the oral cavity. PET showed the highest dimensional stability.

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Hagsten, Lars German, Annette Beedholm Rasmussen, and Jakob Fisker. "Strain Capacity of Reinforced Concrete Members Subjected to Uniaxial Tension." Procedia Engineering 172 (2017): 338–46. http://dx.doi.org/10.1016/j.proeng.2017.02.038.

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Yilmaz, E. Ince. "Metal tolerance and biosorption capacity of Bacillus circulans strain EB1." Research in Microbiology 154, no. 6 (July 2003): 409–15. http://dx.doi.org/10.1016/s0923-2508(03)00116-5.

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Testa, Gabriel, Nicola Bonora, Domenico Gentile, Andrew Ruggiero, Gianluca Iannitti, Antonio Carlucci, and Yazid Madi. "Strain capacity assessment of API X65 steel using damage mechanics." Frattura ed Integrità Strutturale 11, no. 42 (September 29, 2017): 315–27. http://dx.doi.org/10.3221/igf-esis.42.33.

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Weissman, Gary E., Nicole B. Gabler, Sydney E. S. Brown, and Scott D. Halpern. "Intensive care unit capacity strain and adherence to prophylaxis guidelines." Journal of Critical Care 30, no. 6 (December 2015): 1303–9. http://dx.doi.org/10.1016/j.jcrc.2015.08.015.

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Di Salvo, Giovanni, Giuseppe Pacileo, Alessandra Rea, Giuseppe Limongelli, Luca Baldini, Antonello D'Andrea, Michele D'Alto, Berardo Sarubbi, Maria Giovanna Russo, and Raffaele Calabrò. "Transverse strain predicts exercise capacity in systemic right ventricle patients." International Journal of Cardiology 145, no. 2 (November 2010): 193–96. http://dx.doi.org/10.1016/j.ijcard.2009.05.028.

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Wang, J., Z. Zhang, and G. Yang. "The dependence of damping capacity of PMMCs on strain amplitude." Computational Materials Science 18, no. 2 (August 2000): 205–11. http://dx.doi.org/10.1016/s0927-0256(00)00100-2.

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Journal articles on the topic 'Strain capacity'

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