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  1. Article ; Online: Digestibility, lactation performance, plasma metabolites, ruminal fermentation, and bacterial communities in Holstein cows fed a fermented corn gluten-wheat bran mixture as a substitute for soybean meal.

    Jiang, X / Xu, H J / Ma, G M / Sun, Y K / Li, Y / Zhang, Y G

    Journal of dairy science

    2021  Volume 104, Issue 3, Page(s) 2866–2880

    Abstract: The purpose of this research was to investigate the effects of replacing soybean meal (SBM) with a fermented corn gluten-wheat bran mixture (FCWM) on nutrient digestibility, lactation performance, plasma metabolites, ruminal fermentation, and bacterial ... ...

    Abstract The purpose of this research was to investigate the effects of replacing soybean meal (SBM) with a fermented corn gluten-wheat bran mixture (FCWM) on nutrient digestibility, lactation performance, plasma metabolites, ruminal fermentation, and bacterial communities in Holstein cows. Nine healthy multiparous (parity = 3) Holstein cows with similar body weights (624 ± 14.4 kg), days in milk (112 ± 4.2), and milk yields (31.8 ± 1.73 kg; all mean ± standard deviation) were used in a replicated 3 × 3 Latin square design with 3 periods of 28 d. Cows were fed 1 of 3 dietary treatments in which FCWM replaced SBM as follows: basal diet with no replacement (0FCWM); 50% replacement of SBM with FCWM (50%FCWM); and 100% replacement of SBM with FCWM (100%FCWM). The diets were formulated to be isocaloric and isonitrogenous. The results showed that the total-tract digestibility of dry matter and crude protein increased linearly with increased dietary FCWM, and we found a trend for increased total-tract neutral detergent fiber and potentially digestible NDF digestibility. Milk yield tended to increase in a linear manner as more FCWM was consumed, and energy-corrected milk production was significantly increased with FCWM supplementation as a result of increased milk protein and lactose yields. Plasma glucose and IgG concentrations increased linearly with increasing FCWM supplementation, but plasma malondialdehyde concentration decreased linearly. Concentrations of total volatile fatty acids and propionate showed a linear increase with increasing FCWM supplementation, leading to a linear decrease in pH. The relative abundance of ruminal Prevotellaceae, Veillonellaceae, and Prevotella 1 increased linearly with increasing FCWM supplementation, and the relative abundance of ruminal Succinivibrionaceae and Muribaculaceae decreased linearly. The relative abundance of fecal Ruminococcaceae, Prevotellaceae, and Ruminococcaceae UCG-005 increased linearly with increasing FCWM supplementation, but the relative abundance of fecal Peptostreptococcaceae decreased linearly. Overall, the replacement of SBM with FCWM altered the composition of the ruminal bacterial community and improved nutrient digestibility, lactation performance, and ruminal fermentation in cows, providing a data reference for the use of FCWM in dairy production.
    MeSH term(s) Animals ; Cattle ; Diet/veterinary ; Dietary Fiber/metabolism ; Digestion ; Female ; Fermentation ; Glutens/metabolism ; Lactation ; Plasma ; Pregnancy ; Rumen/metabolism ; Glycine max ; Zea mays
    Chemical Substances Dietary Fiber ; Glutens (8002-80-0)
    Language English
    Publishing date 2021-01-15
    Publishing country United States
    Document type Journal Article
    ZDB-ID 242499-x
    ISSN 1525-3198 ; 0022-0302
    ISSN (online) 1525-3198
    ISSN 0022-0302
    DOI 10.3168/jds.2020-19072
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Effects of fermented corn gluten meal on growth performance, plasma metabolites, rumen fermentation and bacterial community of Holstein calves during the pre-weaning period

    Jiang, X / Cui, Z.Q / Li, Y / Ma, G.M / Zhang, Y.G

    Livestock science. 2020 Jan., v. 231

    2020  

    Abstract: The effects of fermented corn gluten meal (FCGM) on growth performance, plasma metabolites, rumen fermentation and bacterial community of Holstein calves during the pre-weaning phase were investigated in this study. Twenty Holstein calves (mean ± SEM; ... ...

    Abstract The effects of fermented corn gluten meal (FCGM) on growth performance, plasma metabolites, rumen fermentation and bacterial community of Holstein calves during the pre-weaning phase were investigated in this study. Twenty Holstein calves (mean ± SEM; age = 6.89 ± 1.32 d) were offered milk replacer and then assigned to the experiment after 1 wk of adaptation. Calves (mean ± SEM; body weight = 49.3 ± 3.12 kg; age = 13.9 ± 1.32 d) were blocked for BW and age and subsequently randomly assigned to receive calf starter containing 5% corn gluten meal (CGM) or 5% FCGM (dry matter basis). The experiment lasted 6 weeks. Fermented corn gluten meal contained a lower (P < 0.05) neutral detergent fiber content but contained higher (P < 0.05) crude protein, amino acid, and small peptide content than CGM. Compared with the calves fed CGM, calves fed FCGM grew faster (P < 0.05) and tended (P < 0.10) to have higher starter intake. The incidence and severity of diarrhea were significantly less (P < 0.05) in FCGM-fed calves than in CGM-fed calves. Concentrations of plasma total superoxide dismutase, catalase, total antioxidant capacity, immunoglobulin A and interferon-γ in calves fed FCGM were significantly higher (P < 0.05) than those of calves fed the CGM. However, the levels of malondialdehyde and interleukin-6 in the plasma were significantly decreased (P < 0.05) in FCGM-fed calves. Moreover, in rumen fluids, the relative abundance of Bacteroidetes was higher in FCGM-fed calves than in CGM-fed calves (68.72% vs. 45.86%). However, the relative abundance of Proteobacteria was lower for calves fed FCGM (12.97% vs. 32.62%); in feces, calves fed FCGM had higher Firmicutes (56.09% vs. 43.01%) but lower Bacteroidetes and Proteobacteria compared with those of calves fed CGM (1.96% vs. 5.10%and 37.02% vs. 47.88%, respectively). Overall, the results indicate that calves fed FCGM during the pre-weaning period exhibited an improved growth performance, a decreased diarrheal incidence, an increased antioxidant and immune capacity, an improved rumen function together with changed bacterial community composition in the rumen fluids and feces.
    Keywords amino acids ; antioxidant activity ; antioxidants ; bacterial communities ; Bacteroidetes ; body weight ; calves ; catalase ; community structure ; corn gluten meal ; crude protein ; diarrhea ; feces ; Firmicutes ; growth performance ; Holstein ; immunoglobulin A ; interferon-gamma ; interleukin-6 ; malondialdehyde ; metabolites ; milk replacer ; neutral detergent fiber ; Proteobacteria ; rumen fermentation ; rumen fluids ; superoxide dismutase
    Language English
    Dates of publication 2020-01
    Publishing place Elsevier B.V.
    Document type Article
    ZDB-ID 2226176-X
    ISSN 1878-0490 ; 1871-1413
    ISSN (online) 1878-0490
    ISSN 1871-1413
    DOI 10.1016/j.livsci.2019.103866
    Database NAL-Catalogue (AGRICOLA)

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  3. Article: Digestibility, lactation performance, plasma metabolites, ruminal fermentation, and bacterial communities in Holstein cows fed a fermented corn gluten-wheat bran mixture as a substitute for soybean meal

    Jiang, X / Xu, H.J / Ma, G.M / Sun, Y.K / Li, Y / Zhang, Y.G

    American Dairy Science Association Journal of dairy science. 2021 Mar., v. 104, no. 3

    2021  

    Abstract: The purpose of this research was to investigate the effects of replacing soybean meal (SBM) with a fermented corn gluten-wheat bran mixture (FCWM) on nutrient digestibility, lactation performance, plasma metabolites, ruminal fermentation, and bacterial ... ...

    Abstract The purpose of this research was to investigate the effects of replacing soybean meal (SBM) with a fermented corn gluten-wheat bran mixture (FCWM) on nutrient digestibility, lactation performance, plasma metabolites, ruminal fermentation, and bacterial communities in Holstein cows. Nine healthy multiparous (parity = 3) Holstein cows with similar body weights (624 ± 14.4 kg), days in milk (112 ± 4.2), and milk yields (31.8 ± 1.73 kg; all mean ± standard deviation) were used in a replicated 3 × 3 Latin square design with 3 periods of 28 d. Cows were fed 1 of 3 dietary treatments in which FCWM replaced SBM as follows: basal diet with no replacement (0FCWM); 50% replacement of SBM with FCWM (50%FCWM); and 100% replacement of SBM with FCWM (100%FCWM). The diets were formulated to be isocaloric and isonitrogenous. The results showed that the total-tract digestibility of dry matter and crude protein increased linearly with increased dietary FCWM, and we found a trend for increased total-tract neutral detergent fiber and potentially digestible NDF digestibility. Milk yield tended to increase in a linear manner as more FCWM was consumed, and energy-corrected milk production was significantly increased with FCWM supplementation as a result of increased milk protein and lactose yields. Plasma glucose and IgG concentrations increased linearly with increasing FCWM supplementation, but plasma malondialdehyde concentration decreased linearly. Concentrations of total volatile fatty acids and propionate showed a linear increase with increasing FCWM supplementation, leading to a linear decrease in pH. The relative abundance of ruminal Prevotellaceae, Veillonellaceae, and Prevotella 1 increased linearly with increasing FCWM supplementation, and the relative abundance of ruminal Succinivibrionaceae and Muribaculaceae decreased linearly. The relative abundance of fecal Ruminococcaceae, Prevotellaceae, and Ruminococcaceae UCG-005 increased linearly with increasing FCWM supplementation, but the relative abundance of fecal Peptostreptococcaceae decreased linearly. Overall, the replacement of SBM with FCWM altered the composition of the ruminal bacterial community and improved nutrient digestibility, lactation performance, and ruminal fermentation in cows, providing a data reference for the use of FCWM in dairy production.
    Keywords Holstein ; Peptostreptococcaceae ; Prevotella ; Ruminococcaceae ; Succinivibrionaceae ; Veillonellaceae ; bacterial communities ; blood glucose ; bran ; corn ; crude protein ; digestibility ; fermentation ; lactation ; lactose ; malondialdehyde ; metabolites ; milk ; milk proteins ; milk yield ; neutral detergent fiber ; pH ; propionic acid ; rumen fermentation ; soybean meal ; standard deviation
    Language English
    Dates of publication 2021-03
    Size p. 2866-2880.
    Publishing place Elsevier Inc.
    Document type Article
    Note NAL-light
    ZDB-ID 242499-x
    ISSN 1525-3198 ; 0022-0302
    ISSN (online) 1525-3198
    ISSN 0022-0302
    DOI 10.3168/jds.2020-19072
    Database NAL-Catalogue (AGRICOLA)

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  4. Article: Effects of dietary 25-hydroxyvitamin D3 on the lactation performance, blood metabolites, antioxidant and immune function in dairy cows

    Xu, H. J. / Jiang, X. / Zhang, C. R. / Ma, G. M. / Wang, L. H. / Zhang, Q. Y. / Zhang, Y. G.

    Livestock science

    2021  Volume 248, Issue -, Page(s) 104497

    Language English
    Document type Article
    ZDB-ID 2226176-X
    ISSN 1871-1413
    Database Current Contents Nutrition, Environment, Agriculture

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  5. Article ; Online: A 65-kV insulated gate bipolar transistor switch applied in damped AC voltages partial discharge detection system.

    Jiang, J / Ma, G M / Luo, D P / Li, C R / Li, Q M / Wang, W

    The Review of scientific instruments

    2014  Volume 85, Issue 2, Page(s) 24706

    Abstract: Damped AC voltages detection system (DAC) is a productive way to detect the faults in power cables. To solve the problems of large volume, complicated structure and electromagnetic interference in existing switches, this paper developed a compact solid ... ...

    Abstract Damped AC voltages detection system (DAC) is a productive way to detect the faults in power cables. To solve the problems of large volume, complicated structure and electromagnetic interference in existing switches, this paper developed a compact solid state switch based on electromagnetic trigger, which is suitable for DAC test system. Synchronous electromagnetic trigger of 32 Insulated Gate Bipolar Transistors (IGBTs) in series was realized by the topological structure of single line based on pulse width modulation control technology. In this way, external extension was easily achieved. Electromagnetic trigger and resistor-capacitor-diode snubber circuit were optimized to reduce the switch turn-on time and circular layout. Epoxy encapsulating was chosen to enhance the level of partial discharge initial voltage (PDIV). The combination of synchronous trigger and power supply is proposed to reduce the switch volume. Moreover, we have overcome the drawback of the electromagnetic interference and improved the detection sensitivity of DAC by using capacitor storage energy to maintain IGBT gate driving voltage. The experimental results demonstrated that the solid-state switch, with compact size, whose turn-on time was less than 400 ns and PDIV was more than 65 kV, was able to meet the actual demands of 35 kV DAC test system.
    Language English
    Publishing date 2014-02
    Publishing country United States
    Document type Journal Article
    ZDB-ID 209865-9
    ISSN 1089-7623 ; 0034-6748
    ISSN (online) 1089-7623
    ISSN 0034-6748
    DOI 10.1063/1.4866654
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  6. Article ; Online: Pd/Ag coated fiber Bragg grating sensor for hydrogen monitoring in power transformers.

    Ma, G M / Jiang, J / Li, C R / Song, H T / Luo, Y T / Wang, H B

    The Review of scientific instruments

    2015  Volume 86, Issue 4, Page(s) 45003

    Abstract: Compared with conventional DGA (dissolved gas analysis) method for on-line monitoring of power transformers, FBG (fiber Bragg grating) hydrogen sensor represents marked advantages over immunity to electromagnetic field, time-saving, and convenience to ... ...

    Abstract Compared with conventional DGA (dissolved gas analysis) method for on-line monitoring of power transformers, FBG (fiber Bragg grating) hydrogen sensor represents marked advantages over immunity to electromagnetic field, time-saving, and convenience to defect location. Thus, a novel FBG hydrogen sensor based on Pd/Ag (Palladium/Silver) along with polyimide composite film to measure dissolved hydrogen concentration in large power transformers is proposed in this article. With the help of Pd/Ag composite coating, the enhanced performance on mechanical strength and sensitivity is demonstrated, moreover, the response time and sensitivity influenced by oil temperature are solved by correction lines. Sensitivity measurement and temperature calibration of the specific hydrogen sensor have been done respectively in the lab. And experiment results show a high sensitivity of 0.055 pm/(μl/l) with instant response time about 0.4 h under the typical operating temperature of power transformers, which proves a potential utilization inside power transformers to monitor the health status by detecting the dissolved hydrogen concentration.
    Language English
    Publishing date 2015-04
    Publishing country United States
    Document type Journal Article
    ZDB-ID 209865-9
    ISSN 1089-7623 ; 0034-6748
    ISSN (online) 1089-7623
    ISSN 0034-6748
    DOI 10.1063/1.4918802
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: Biodegradation of sorbed chemicals in soil.

    Scow, K M / Fan, S / Johnson, C / Ma, G M

    Environmental health perspectives

    1995  Volume 103 Suppl 5, Page(s) 93–95

    Abstract: Rates of biodegradation of sorbed chemicals are usually lower in soil than in aqueous systems, in part because sorption reduces the availability of the chemical to microorganisms. Biodegradation, sorption, and diffusion occur simultaneously and are ... ...

    Abstract Rates of biodegradation of sorbed chemicals are usually lower in soil than in aqueous systems, in part because sorption reduces the availability of the chemical to microorganisms. Biodegradation, sorption, and diffusion occur simultaneously and are tightly coupled. In soil, the rate of biodegradation is a function of a chemical's diffusion coefficient, sorption partition coefficient, the distance it must diffuse from the site of sorption to microbial populations that can degrade it, and its biodegradation rate constant. A model (DSB model) was developed that describes biodegradation of chemicals limited in the availability by sorption and diffusion. Different kinetics expressions describe biodegradation depending on whether the reaction is controlled by mass transfer (diffusion and sorption) or the intrinsic biodegradation rate, and whether biodegradation begins during or after the majority of sorption has occurred. We tested the hypothesis that there is a direct relationship between how strongly a chemical is sorbed and the chemical's biodegradation rate. In six soils with different organic carbon contents, there was no relationship between the extent or rate of biodegradation and the sorption partition coefficient for phenanthrene. Aging of phenanthrene residues in soil led to a substantial reduction in the rate of biodegradation compared to biodegradation rates of recently added phenanthrene. Considerable research has focused on identification and development of techniques for enhancing in situ biodegradation of sorbed chemicals. Development of such techniques, especially those involving inoculation with microbial strains, should consider physical mass transfer limitations and potential decreases in bioavailability over time.
    MeSH term(s) Absorption ; Adsorption ; Biodegradation, Environmental ; Diffusion ; Drug Residues ; Kinetics ; Models, Biological ; Phenanthrenes/metabolism ; Soil Pollutants/metabolism
    Chemical Substances Phenanthrenes ; Soil Pollutants ; phenanthrene (448J8E5BST)
    Language English
    Publishing date 1995-06
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S. ; Research Support, U.S. Gov't, P.H.S.
    ZDB-ID 195189-0
    ISSN 1552-9924 ; 0091-6765 ; 1078-0475
    ISSN (online) 1552-9924
    ISSN 0091-6765 ; 1078-0475
    DOI 10.1289/ehp.95103s493
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    Zs.MO 379: Show issues

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  8. Article: Tungro and bacterial blight resistant elite rice breeding lines verified through induced screening and using molecular markers

    Espejo, E.O. / Alfonso, A.A. / Somera, J.J., Philippine Rice Research Inst., Maligaya, Science City of Muñoz, Nueva Ecija (Philippines) / Babb, Ma.G.M. / Duque, Ma.J.C. / Braceros, R.J., New Mexico, La Cruses (USA)

    Philippine Journal of Crop Science (Philippines)

    (May 2011)  Volume v. 36, Issue (1), Page(s) p. 116

    Abstract: Tungro and bacterial blight are very devastating disease affecting rice especially during the wet season in many irrigated areas. The deployment of resistant varieties has been effective as the first line of defense against these diseases. However, ... ...

    Abstract Tungro and bacterial blight are very devastating disease affecting rice especially during the wet season in many irrigated areas. The deployment of resistant varieties has been effective as the first line of defense against these diseases. However, breeding is hampered by the limited donor genotypes possessing both traits and by the lack of rapid but reliable methods to screen resistant genotypes. The common screening method for tungro and bacterial blight is through field screening under natural or induced conditions. Field screening is not always preferred because of high cost and long duration of screening. Induced screening under screenhouse condition combined with DNA markers linked to the trait can be more cost-effective and efficient than field evaluaton. In this study, the authors conducted induced screening (forced-feeding of GLH as virus vector for tungro and leaf clipping method for bacterial leaf blight) to determine the reaction to tungro and BLB using 48 lines during the first season, and using five selected lines in the following season. After two seasons of confirmatory tests, line PR37171-1-1-1-2-2-1-1 (from the cross AR32-19-3-4 and Matatag 6 was verified to be resistant to both the diseases. Stable resistance was inferred from the uniform and consistent reaction of all the progenies for three seasons. Using known DNA markers, line PR37171-1-1-1-2-2-1-1 was verified to possess Xa4 and Xa21 genes that confer resistance to bacterial blight. Additionally, this line had a DNA banding pattern that indicates resistance when the tungro resistance-associated SSR marker RM8213 on chromosome 4 was used. This line is currently being used as donor in the development of disease resistant Golden Rice and other breeding lines with preferred traits.
    Keywords ORYZA SATIVA ; PROGENY ; GENOTYPES ; GENETIC MARKERS ; RICE TUNGRO VIRUS ; BLIGHT ; DISEASE RESISTANCE ; FIELD EXPERIMENTATION ; ORYZA SATIVA ; DESCENDANCE ; GENOTYPE ; MARQUEUR GENETIQUE ; VIRUS TUNGRO DU RIZ ; DEPERISSEMENT ; RESISTANCE AUX MALADIES ; EXPERIMENTATION AU CHAMP ; ORYZA SATIVA ; PROGENIE ; GENOTIPOS ; MARCADORES GENETICOS ; VIRUS DEL TUNGRO DEL ARROZ ; TIZON ; RESISTENCIA A LA ENFERMEDAD ; EXPERIMENTACION EN CAMPO ; http://www.fao.org/aos/agrovoc#c_5438 ; http://www.fao.org/aos/agrovoc#c_16019 ; http://www.fao.org/aos/agrovoc#c_3225 ; http://www.fao.org/aos/agrovoc#c_24030 ; http://www.fao.org/aos/agrovoc#c_34138 ; http://www.fao.org/aos/agrovoc#c_957 ; http://www.fao.org/aos/agrovoc#c_2328 ; http://www.fao.org/aos/agrovoc#c_33990
    Language English
    Document type Article
    ISSN 0116-463X
    Database AGRIS - International Information System for the Agricultural Sciences and Technology

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  9. Article: Synovial distribution of alpha d/CD18, a novel leukointegrin. Comparison with other integrins and their ligands.

    el-Gabalawy, H / Canvin, J / Ma, G M / Van der Vieren, M / Hoffman, P / Gallatin, M / Wilkins, J

    Arthritis and rheumatism

    1996  Volume 39, Issue 11, Page(s) 1913–1921

    Abstract: Objective: To define the synovial distribution of the novel leukointegrin alpha d/CD18, and compare this with other members of the beta 2-integrin family of adhesion molecules, and their counter-receptors.: Methods: Monoclonal antibodies to the CD3, ... ...

    Abstract Objective: To define the synovial distribution of the novel leukointegrin alpha d/CD18, and compare this with other members of the beta 2-integrin family of adhesion molecules, and their counter-receptors.
    Methods: Monoclonal antibodies to the CD3, CD14, CD29, CD68, beta 2-integrin, and immunoglobulin supergene families were used to immunohistologically define the distribution of these molecules in synovial tissue samples from normal subjects and osteoarthritis (OA) and rheumatoid arthritis (RA) patients.
    Results: The normal synovial lining cell layer (SLC) expresses CD68, vascular cell adhesion molecule 1, beta 1-integrin (CD29), the beta 2-integrins CD11b/CD18 (alpha m/beta 2, Mac-1), and alpha d/CD18, whereas CD11a/CD18 (alpha L/beta 2, lymphocyte function-associated antigen 1) and CD11c/CD18 (alpha x/beta 2, gp150/95) expression is generally absent. In RA synovitis, expression of beta 2-integrins in the SLC increases in proportion to the degree of hyperplasia. The ratio of cells in the SLC which express CD11c/CD18 increases substantially, approaching that of CD11b/CD18 and alpha d/CD18, while there is minimal increase in CD11a/CD18 expression. In the sublining areas of the tissues, aggregates and diffuse infiltrates of CD3/CD11a/ICAM-3+ lymphocytes are interspersed among CD68/CD14/CD11b/alpha d+ macrophages. A number of aggregates demonstrate intense alpha d staining of the lymphocytes. The synovial endothelium variably expresses intercellular adhesion molecule-1 (ICAM-1), ICAM-2, and vascular cell adhesion molecule 1 (VCAM-1), with minimal evidence of ICAM-3 expression.
    Conclusion: The leukointegrin alpha d/CD18 is expressed constitutively by synovial macrophages and macrophage-like lining cells. In rheumatoid synovitis, the intense coexpression of this integrin and its known counter-receptor, ICAM-3, in the inflammatory infiltrates, suggests a potential role for this adhesion pathway in cellular interactions occurring the synovium.
    MeSH term(s) Adult ; Aged ; Antigens, CD ; Antigens, Differentiation ; Arthritis/metabolism ; Arthritis, Rheumatoid/metabolism ; Blood Vessels/chemistry ; Blood Vessels/immunology ; CD18 Antigens/analysis ; CD3 Complex/analysis ; Cell Adhesion Molecules/analysis ; Female ; Humans ; Lymphocytes/immunology ; Macrophages/chemistry ; Male ; Middle Aged ; Synovial Membrane/blood supply ; Synovial Membrane/chemistry
    Chemical Substances Antigens, CD ; Antigens, Differentiation ; CD18 Antigens ; CD3 Complex ; Cell Adhesion Molecules ; ICAM3 protein, human
    Language English
    Publishing date 1996-11
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 127294-9
    ISSN 1529-0131 ; 0004-3591 ; 2326-5191
    ISSN (online) 1529-0131
    ISSN 0004-3591 ; 2326-5191
    DOI 10.1002/art.1780391119
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Enhanced Production of Λ_{b}^{0} Baryons in High-Multiplicity pp Collisions at sqrt[s]=13  TeV.

    Aaij, R / Abdelmotteleb, A S W / Abellan Beteta, C / Abudinén, F / Ackernley, T / Adeva, B / Adinolfi, M / Adlarson, P / Agapopoulou, C / Aidala, C A / Ajaltouni, Z / Akar, S / Akiba, K / Albicocco, P / Albrecht, J / Alessio, F / Alexander, M / Alfonso Albero, A / Aliouche, Z /
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    Physical review letters

    2024  Volume 132, Issue 8, Page(s) 81901

    Abstract: The production rate of Λ_{b}^{0} baryons relative to B^{0} mesons in pp collisions at a center-of-mass energy sqrt[s]=13  TeV is measured by the LHCb experiment. The ratio of Λ_{b}^{0} to B^{0} production cross sections shows a significant dependence on ... ...

    Abstract The production rate of Λ_{b}^{0} baryons relative to B^{0} mesons in pp collisions at a center-of-mass energy sqrt[s]=13  TeV is measured by the LHCb experiment. The ratio of Λ_{b}^{0} to B^{0} production cross sections shows a significant dependence on both the transverse momentum and the measured charged-particle multiplicity. At low multiplicity, the ratio measured at LHCb is consistent with the value measured in e^{+}e^{-} collisions, and increases by a factor of ∼2 with increasing multiplicity. At relatively low transverse momentum, the ratio of Λ_{b}^{0} to B^{0} cross sections is higher than what is measured in e^{+}e^{-} collisions, but converges with the e^{+}e^{-} ratio as the momentum increases. These results imply that the evolution of heavy b quarks into final-state hadrons is influenced by the density of the hadronic environment produced in the collision. Comparisons with several models and implications for the mechanisms enforcing quark confinement are discussed.
    Language English
    Publishing date 2024-03-08
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.132.081901
    Database MEDical Literature Analysis and Retrieval System OnLINE

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