269 research outputs found

    It was Just Ugly and Uncomfortable : A Phenomenological Study of Intergenerational Transmission Among Adult Children of Divorce

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    Grounded in the intergenerational transmission of divorce theory, this qualitative phenomenological study explored how lived experiences of relational communication among female Adult Children of Divorce (ACOD) might reflect those of their parents who divorced during the adult child’s adolescence years. Ten in-depth Skype interviews were conducted with female ACOD at a large northeastern university. All participants shared negative communication behaviors that they perceived their parents used before the divorce. They described their experiences as “ugly and uncomfortable.” The findings suggested that ACOD’s exposure to conflict influenced the communication behaviors of their romantic relationships. Specifically, ACOD have had limited positive communication behaviors that could serve as models for their own romantic relationships. These findings support the need for research education programs aimed at adolescents to teach healthy communication skills at the start of their romantic relationship experiences

    Effects of Drought and Elevated Atmospheric Carbon Dioxide on Seed Nutrition and 15N and 13C Natural Abundance Isotopes in Soybean Under Controlled Environments

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    The objective of the current research was to evaluate the effects of drought and elevated CO2 on seed production and seed nutrition under controlled conditions in soybean. Soybean plants were subjected to ambient and elevated CO2 and under irrigated and drought conditions. The results showed that drought or drought with elevated CO2 resulted in high protein and oleic acid, but low in oil and linoleic and linolenic acids. Significant decrease of sucrose, glucose, and fructose concentrations was noticed, but high content of raffinose and stachyose was observed. Nutrients such as N, P, K, and some micro-nutrients were reduced under drought or drought with normal or elevated CO2 concentrations. Seed ÎŽ15N (15N/14N ratio) and ÎŽ13C (13C/12C ratio) natural abundance isotopes were also altered under drought or drought with ambient or elevated CO2 concentrations, reflecting nitrogen and carbon metabolism changes. The current research demonstrated that global climate changes may lead to changes in seed nutrition, and nitrogen and carbon metabolism. Efforts of breeders to select for these traits will sustain food source and food security for humans and livestock as soybean is a major source for protein and oil for human consumption and soymeal for animals

    Effet de la tempĂ©rature sur la structure d’un puit quantique Ă  base de GaN/AlxGa1-xN

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    Dans ce travail nous avons Ă©tudiĂ© des structures Ă  puits quantique contraint Ă  base de GaN/AlxGa1-xN. Nous avons Ă©tudiĂ© l’énergie de la bande interdite, le confinement des porteurs dans le puits et l’énergie de transition. L’étude est basĂ©e sur l’effet de la contrainte, l’épaisseur de la zone active, la concentration d’aluminium et l’injection des porteurs sur le gain optique. L’effet de la tempĂ©rature sur la structure est pris en considĂ©ration. Nous constatons que lorsque la densitĂ© de porteurs augmente de 6 Ă  8.1025m-3 le gain optique et la largeur spectrale augmentent de 25% et 1.3% respectivement. L’accroissement de la tempĂ©rature dĂ©croit le gain optique. A partir de cette structure nous pouvons rĂ©aliser des composants optoĂ©lectroniques fiables et stables en tempĂ©rature

    Fractures-Luxations Du Rachis Dorsolombaire : Une étude rétrospective sur fractures & luxations du rachis dorsolombaire ; A propos de 15 CAS

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    MatĂ©riels et mĂ©thodes : une Ă©tude portĂ©e sur les cas des traumatismes du rachis dorsolombaire au sein du service d’orthopĂ©die et traumatologie-CHU-Blida, sur une pĂ©riode allant de l’annĂ©e 2015 au juillet 2017. Au terme de cette Ă©tude, on retient les points principaux suivants :-La frĂ©quence Ă©levĂ©e des fractures-luxation au cours de notre Ă©tude, a Ă©tĂ© 12,5%.-Le sexe masculin est le plus touchĂ©, soit 73.3% des cas avec un sex-ratio de 2,75.-La frĂ©quence des adultes jeunes, partie importante de la population active, peut ĂȘtre source de consĂ©quence fĂącheuse pour l’avenir socio-Ă©conomique du pays.-L’étiologie est dominĂ©e par les AC, les chutes qui sont inhĂ©rents Ă  une vie urbaine en plein essor.-Les lĂ©sions du rachis dorsolombaire dominĂ©es par les fractures de type C de MAGERL.-Les lĂ©sions mĂ©dullaires sont de diagnostic et de traitement difficil

    Quantitative Trait Loci Underlying Seed Sugars Content in “MD96-5722” by “Spencer” Recombinant Inbred Line Population of Soybean

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    Sucrose, raffinose, and stachyose are important soluble sugars in soybean [Glycine max (L.) Merr.] seeds. Seed sucrose is a desirable trait for taste and flavor. Raffinose and stachyose are undesirable in diets of monogastric animals, acting as anti-nutritional factors that cause flatulence and abdominal discomfort. Therefore, reducing raffinose and stachyose biosynthesis is considered as a key quality trait goal in soy food and feed industries. The objective of this study was to identify genomic regions containing quantitative trait loci (QTL) controlling sucrose, raffinose, and stachyose in a set of 92 F5:7 recombinant inbred lines (RILs) derived from a cross between the lines “MD96- 5722” and “Spencer” by using 5376 Single Nucleotide Polymorphism (SNP) markers from the Illumina Infinium SoySNP6K BeadChip array. Fourteen significant QTL were identified and mapped on eight different linkage groups (LGs) and chromosomes (Chr). Three QTL for seed sucrose content were identified on LGs N (Chr3), K (Chr9), and E (Chr15). Seven QTL were identified for raffinose content on LGs D1a (Chr1), N (Chr3), C2 (Chr6), K (Chr9), B2 (Chr14), and J (Chr16). Four QTL for stachyose content were identified on LG D1a (Chr1), C2 (Chr6), H (Chr12), and B2 (Chr14). Selection for beneficial alleles of these QTLs could facilitate breeding strategies to develop soybean lines with higher concentrations of sucrose and lower levels of raffinose and stachyose

    Feasibility of electrokinetic nitrogen supply for soil fertilization purposes

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    Abstract This article presents the results of the application of electrokinetic technique to fertilize an agricultural natural soil with nitric nitrogen (as NO 3 − ). The injection into the soil of amounts of nitrate proportional to the applied electric current is adapted to the plant needs. This would help to reduce the nitrate pollution in waters generated in part by excessive fertilizer inputs in agricultural systems. The pilot test was realized at constant current of 2.54A (current density 6.2A.m -2 ) on a soil mass of 46.7 kg. All results showed the injection and transport of nitrate through the soil. The electromigration is the preponderant transport mechanism. Nitrate ions were transported throughout the soil sample at contents between 208-1428 mg N.kg -1 of soil, on the ground corresponding to a nitrogen rate between 80-550 kg N. ha -1 . pH is maintained at its initial value in electrolytic compartments in electrolytic compartments. the electrical energy consumed in the pilot test was about 32.9 Wh.kg -1

    Identification of Quantitative Trait Loci (QTL) Underlying Protein, Oil, and Five Major Fatty Acids’ Contents in Soybean

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    Improved seed composition in soybean [Glycine max (L.) Merr.] for protein and oil quality is one of the major goals of soybean breeders. A group of genes that act as quantitative traits with their effects can alter protein, oil, palmitic, stearic, oleic, linoleic, and linolenic acids percentage in soybean seeds. The objective of this study was to identify Quantitative Trait Loci (QTL) controlling protein, oil, and fatty acids content in a set of F5:8 RILs de-rived from a cross between lines, ‘MD 96-5722’ and ‘Spencer’ using 5376 Single Nucleotide Polymorphism (SNP) markers from the Illumina Infinium SoySNP6K BeadChip array. QTL analysis used WinQTL Cart 2.5 software for composite interval mapping (CIM). Identified, were; one protein content QTL on linkage group (LG-) B2 or chromosome (Chr_) 14; 11 QTL associated with oil content on six linkage groups LG-N (Chr_3), LG-A1 (Chr_5), LG-K (Chr_9), LG-F (Chr_13), LG-B2 (Chr_14), and LG-J (Chr_16); and sixteen QTL for five major fatty acids (palmitic, stearic, oleic, linoleic, and linolenic acids) on LG-N (Chr_3), LG-F (Chr_13), LG-B2 (Chr_14), LG-E (Chr_15), LG-J (Chr_16), and LG-G (Chr_18). The SNP markers closely linked to the QTL reported here will be useful for development of cultivars with altered oil and fatty acid compositions in soybean breeding programs
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