Effects of Different Levels of Boron Fertilizer on Alfalfa Photosynthesis and Source-Sink Translocation of Soluble Carbohydrate in Alfalfa

2010 ◽  
Vol 36 (4) ◽  
pp. 665-672 ◽  
Author(s):  
Yu-Zheng ZONG ◽  
Wen-Yue WANG ◽  
Qing-Fang HAN ◽  
Rui-Xia DING ◽  
Zhi-Kuan JIA ◽  
...  
Keyword(s):  
Soluble Carbohydrate ◽  
Source Sink ◽  
Different Levels

GROWTH AND MODIFICATION OF DIGESTION IN LAMBS FED DIETS CONTAINING CEMENT KILN DUST

1985 ◽  
Vol 65 (2) ◽  
pp. 419-427
Author(s):  
R. S. BUSH ◽  
J. W. G. NICHOLSON ◽  
F. W. CALDER
Keyword(s):  
Growth Rate ◽  
The Other ◽  
Cement Kiln Dust ◽  
Control Group ◽  
Soluble Carbohydrate ◽  
Cement Kiln ◽  
Ad Libitum ◽  
Fecal Ph ◽  
Kiln Dust ◽  
Different Levels

Three experiments were conducted to determine (1) the effect of cement kiln dust (CKD) on the growth of lambs fed high- or low-roughage diets, (2) the effect of pelleting on lamb diets which contain CKD, and (3) the effect of different levels of dietary CKD on lamb performance. In exp. 1, lambs were fed complete pelleted diets containing 15 or 45% ground timothy hay with either 0 or 3% CKD. There were no differences in weight gain due to CKD addition. The feed consumed was greater for the high roughage-CKD group (P < 0.05). Feed:gain ratios were greater for the high-roughage groups (P < 0.01). The pH of gastrointestinal tract contents showed an increase due to CKD only in the cecum and colon. The carbohydrate level in the colon of lambs fed the low-roughage rations was lower (P < 0.05) with added CKD. In exp. 2, lambs were fed CKD diets in mash and pelleted form, a complete pelleted CKD diet (including hay) or a mash CKD-free control. All diets except the complete pelleted-CKD diet were fed with hay, ad libitum. Lambs fed the pelleted CKD diet plus hay grew faster than the control group (P < 0.05) with growth in the other groups not different from either extreme. In exp. 3, lambs were fed similar diets containing 0, 1, 2 or 3% CKD. Growth was not different for any of the groups. Fecal pH was elevated in two of the CKD groups. Analysis of feces showed no difference in nitrogen, soluble carbohydrate, ADF or NDF as a percent of organic matter. Fecal ash increased with increasing level of CKD (P < 0.01). Key words: Lamb, cement kiln dust, growth rate, digesta pH

scholarly journals Fermentation Profile of Millet Silage With Inclusion of Dehydrated Corn Grain, Cob and Straw

2020 ◽  
Vol 8 (1) ◽  
pp. 328
Author(s):  
Vanderli Luciano da Silva ◽  
Paulo Vitor Divino Xavier de Freitas ◽  
Débora De Carvalho Basto ◽  
Leonardo Guimarães de Oliveira ◽  
Daniel Staciarini Correa ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Dry Matter ◽  
Recovery Process ◽  
Soluble Carbohydrates ◽  
Soluble Carbohydrate ◽  
Ph Buffering ◽  
Silage Fermentation ◽  
Fermentation Profile ◽  
Different Levels ◽  
Corn Grain

This study aimed to evaluating the fermentation characteristics of millet silage, cultivar ADR500, under the inclusion of different levels of dehydrated corn grain, cob and straw (CGCS): 0, 5, 10 and 15%, ensiled after 78 days of vegetative growth. The experimental design was completely randomized with 4 treatments and 4 replications, totaling 16 experimental units. Was evaluated pH, buffering capacity, lactic acid, acetic acid, propionic acid, butyric acid, gas and effluents losses, dry matter recovery, and soluble carbohydrates. Data were subjected to an analysis of variance and means were compared by 5% Tukey test. A regression analysis was performed for the inclusion levels. CGCS inclusion reduced (P<0.05) gas and effluent loss in all treatments, ranging from 6.10 to 3.48 for gases and 9.05 to 17.28 for effluents, and significantly contributed to the dry matter recovery process (DM). Buffer power values (BP), pH and ammoniacal-N were influenced (P <0.05) by the inclusion of different levels of CGCS. Levels of acetic, propionic, butyric, and lactic acid were influenced by treatments. Finally, soluble carbohydrate values is increased depending on the CGCS inclusion levels, proving be efficient to improve the silage fermentation profile quality.

scholarly journals Propiyonik Asit Katkısının Toplam Karışım Rasyonu Yemin Aerobik Stabilite Özellikleri Üzerine Etkileri

2021 ◽  
Vol 9 (1) ◽  
pp. 210-216
Author(s):  
Ahmet Aslım ◽  
Berrin Okuyucu ◽  
Fisun Koç
Keyword(s):  
Lactic Acid ◽  
Propionic Acid ◽  
Storage Conditions ◽  
Water Soluble ◽  
Neutral Detergent Fiber ◽  
Soluble Carbohydrate ◽  
Total Mixed Ration ◽  
Aerobic Stability ◽  
Different Levels ◽  
Feed Samples

This study investigated the effects of different levels of propionic acid addition on the aerobic stability characteristics of the total mixture ration. In the study, the effects of four different levels of propionic acid-based additives (0, 1.5, 3.0, 4.5%) on storage conditions of 26°C and 30°C. Feed samples were stored for 7 days, 3 replicates for each treatment group. Chemical and microbiological parameters were analysed in feed samples during aerobic stability. Temperature values and ambient temperature in each treatment were measured and recorded through temperature sensors for 7 days. The addition of additives in the study decreased the pH, dry matter, neutral detergent fiber, and yeast contents of total mixed ration, increased crude protein, eter extract, water soluble carbohydrate, lactic acid, and lactic acid bacteria contents and prevented mold growth. As a result of the research, the addition of 4.5% propionic acid allowed the total mixed ration to remain stable at 26°C for 7 days and 30°C for 5 days.

scholarly journals Source-Sink Relationships in Cranberry: Effects on Carbohydrate Production and Partitioning

HortScience ◽  
2004 ◽  
Vol 39 (4) ◽  
pp. 761A-761
Author(s):  
Justine E. Vanden Heuvel*
Keyword(s):  
Leaf Area ◽  
Direct Relationship ◽  
Positive Relationship ◽  
Growing Season ◽  
Water Soluble ◽  
Vaccinium Macrocarpon ◽  
Soluble Carbohydrate ◽  
Starch Concentration ◽  
Carbohydrate Concentration ◽  
Source Sink

Fruiting and vegetative greenhouse-grown cranberry uprights (Vaccinium macrocarpon Ait.) were subjected to four defoliation levels (0%, 25%, 50%, 75%) on one of three dates during the growing season. Seven days following defoliation, vines were destructively harvested and carbohydrate concentration was quantified using HPLC. Prior to new growth, defoliation did not affect the concentration of total non-structural carbohydrates (TNSC) in the uprights, or the partitioning of water-soluble (i.e., sucrose, glucose, fructose) to ethanol-insoluble (i.e., starch) carbohydrates, even though uprights with lower leaf areas had higher net CO2 assimilation rates (A). At 2 weeks post-bloom, TNSC concentration was reduced in defoliated vines, although A was not affected by defoliation. Prior to harvest, TNSC concentration was reduced in vines subjected to defoliation while A was unaffected, although the positive relationship between soluble carbohydrate concentration and leaf area per upright reached an asymptote, while the direct relationship between starch concentration and leaf area remained linear. Carbohydrate production and partitioning of an upright was unaffected by the presence of a single fruit throughout the experiment. These results suggest that carbohydrate production in cranberry uprights may be sink-limited prior to fruiting, and then becomes source-limited as the growing season progresses.

Dependence of Intergranular Fracture on Boundary Topography and Cohesion

1973 ◽  
Vol 31 ◽  
pp. 150-151
Author(s):  
J. E. Doherty ◽  
A. F. Giamei ◽  
B. H. Kear ◽  
C. W. Steinke
Keyword(s):  
Grain Boundary ◽  
Room Temperature ◽  
Nickel Base Superalloy ◽  
Boundary Shear ◽  
Room Temperature Ductility ◽  
Solid Solution Matrix ◽  
Nickel Base ◽  
Solution Matrix ◽  
Different Levels ◽  
Base Superalloy

Recently we have been investigating a class of nickel-base superalloys which possess substantial room temperature ductility. This improvement in ductility is directly related to improvements in grain boundary strength due to increased boundary cohesion through control of detrimental impurities and improved boundary shear strength by controlled grain boundary micros true tures.For these investigations an experimental nickel-base superalloy was doped with different levels of sulphur impurity. The micros tructure after a heat treatment of 1360°C for 2 hr, 1200°C for 16 hr consists of coherent precipitates of γ’ Ni3(Al,X) in a nickel solid solution matrix.

Immunoenzymatic demonstration of the simultaneous presence of transferrin, hemopexin and albumin in a same hepatocyte and their ultrastructural localization

1978 ◽  
Vol 36 (2) ◽  
pp. 88-89
Author(s):  
M. Kraemer ◽  
J. Foucrier ◽  
J. Vassy ◽  
M.T. Chalumeau
Keyword(s):  
Plasma Proteins ◽  
Rat Hepatocytes ◽  
Ultrastructural Localization ◽  
Carrier Proteins ◽  
Normal Cells ◽  
Adult Rat ◽  
Adult Rat Hepatocytes ◽  
Monospecific Antisera ◽  
Different Levels

Some authors using immunofluorescent techniques had already suggested that some hepatocytes are able to synthetize several plasma proteins. In vitro studies on normal cells or on cells issued of murine hepatomas raise the same conclusion. These works could be indications of an hepatocyte functionnal non-specialization, meanwhile the authors never give direct topographic proofs suitable with this hypothesis.The use of immunoenzymatic techniques after obtention of monospecific antisera had seemed to us useful to bring forward a better knowledge of this problem. We have studied three carrier proteins (transferrin = Tf, hemopexin = Hx, albumin = Alb) operating at different levels in iron metabolism by demonstrating and localizing the adult rat hepatocytes involved in their synthesis.Immunological, histological and ultrastructural methods have been described in a previous work.

Memory Processes, Aging, Cognitive Decline, and Neurodegenerative Diseases

2006 ◽  
Vol 11 (4) ◽  
pp. 304-311 ◽  
Author(s):  
Lars-Göran Nilsson
Keyword(s):  
Cognitive Impairment ◽  
Cognitive Decline ◽  
Neurodegenerative Disease ◽  
Genetic Markers ◽  
Brain Activity ◽  
Memory Performance ◽  
Modeling And Simulations ◽  
Aging And Health ◽  
Explained Variance ◽  
Different Levels

This paper presents four domains of markers that have been found to predict later cognitive impairment and neurodegenerative disease. These four domains are (1) data patterns of memory performance, (2) cardiovascular factors, (3) genetic markers, and (4) brain activity. The critical features of each domain are illustrated with data from the longitudinal Betula Study on memory, aging, and health ( Nilsson et al., 1997 ; Nilsson et al., 2004 ). Up to now, early signs regarding these domains have been examined one by one and it has been found that they are associated with later cognitive impairment and neurodegenerative disease. However, it was also found that each marker accounts for only a very small part of the total variance, implying that single markers should not be used as predictors for cognitive decline or neurodegenerative disease. It is discussed whether modeling and simulations should be used as tools to combine markers at different levels to increase the amount of explained variance.

Implications of Person Fluctuation for the Stability and Validity of Test Scores

Methodology ◽  
2006 ◽  
Vol 2 (4) ◽  
pp. 142-148 ◽  
Author(s):  
Pere J. Ferrando
Keyword(s):  
Item Response ◽  
Test Scores ◽  
Temporal Stability ◽  
Person Fit ◽  
Item Parameters ◽  
Individual Trait ◽  
The Stability ◽  
The Individual ◽  
Different Levels ◽  
Fluctuation Model

In the IRT person-fluctuation model, the individual trait levels fluctuate within a single test administration whereas the items have fixed locations. This article studies the relations between the person and item parameters of this model and two central properties of item and test scores: temporal stability and external validity. For temporal stability, formulas are derived for predicting and interpreting item response changes in a test-retest situation on the basis of the individual fluctuations. As for validity, formulas are derived for obtaining disattenuated estimates and for predicting changes in validity in groups with different levels of fluctuation. These latter formulas are related to previous research in the person-fit domain. The results obtained and the relations discussed are illustrated with an empirical example.

The Emergence and Maintenance of Ethical Leadership in Organizations

2012 ◽  
Vol 11 (1) ◽  
pp. 7-19 ◽  
Author(s):  
Silke Astrid Eisenbeiß ◽  
Steffen R. Giessner
Keyword(s):  
Cultural Values ◽  
Ethical Leadership ◽  
Leadership Behavior ◽  
Peer Group ◽  
Organizational Characteristics ◽  
Future Research ◽  
Environmental Complexity ◽  
Group Influence ◽  
Analysis Society ◽  
Different Levels

The present paper gives a review of empirical research on ethical leadership and shows that still little is known known about the contextual antecedents of ethical leadership. To address this important issue, a conceptual framework is developed that analyzes the embeddedness of organizational ethical leadership. This framework identifies manifest and latent contextual factors on three different levels of analysis – society, industry, and organization – which can affect the development and maintenance of ethical leadership. In particular, propositions are offered about how (1) societal characteristics, notably the implementation and the spirit of human rights in a society and societal cultural values of responsibility, justice, humanity, and transparency; (2) industry characteristics such as environmental complexity, the content of the organizational mandate, and the interests of stakeholder networks; and (3) intra-organizational characteristics, including the organizational ethical infrastructure and the ethical leadership behavior of a leader’s peer group, influence the development and maintenance of ethical leadership in organizations. This list of factors is not exhaustive, but illustrates how the three levels may impact ethical leadership. Implications for managerial practice and future research are discussed.

Sign in / Sign up

Export Citation Format

Share Document