40,674 research outputs found
Lo Jee-Ou's memorandum to Chambers Chow and H-T Yang on June 15, 1946, Hankow (Hankou) [China]
No full textA memorandum from Lo Jee-Ou to Chambers Chow and H-T Yang on June 15, 1946, regarding urgent problems with relief work. Three identical copies of this memorandum are included.Action – Applications for Relie
Tseng Young-son's memorandum to Chambers Chow and H. T. Yang on June 4, 1946, to request speaker system for the Cotton Mill Camp, with R. Galaida's handwritten notes
No full textTseng Young-son's memorandum to Chambers Chow and H. T. Yang (Yang Xiandong), June 4, 1946, to request speaker system for the Cotton Mill Camp, with R. Galaida's handwritten notesAction – Applications for Relie
Letter from Carl T. Hayden to C. H. Gensler, Havasupai Reservation
No full textLetter from Carl T. Hayden to C. H. Gensler, Havasupai Indian Reservation, regarding Hualapai and Cataract Canyons geography
The Chow ring of punctual Hilbert schemes of toric surfaces
No full text27 pages, updated version, minor modifications.Let X be a smooth projective toric surface, and H^d(X) the Hilbert scheme parametrising the length d zero-dimensional subschemes of X. We compute the rational Chow ring A^*(H^d(X))_Q. More precisely, if T is the two-dimensional torus contained in X, we compute the rational equivariant Chow ring A_T^*(H^d(X))_Q and the usual Chow ring is an explicit quotient of the equivariant Chow ring. The case of some quasi-projective toric surfaces such as the affine plane are described by our method too
Letter from Charles H. Burke to Carl Hayden
No full textLetter from Charles H. Burke to Carl T. Hayden about mining on Diné (formerly Navajo) national land
Letter from John H. Page to Carl Hayden
No full textLetter from John H. Page to Carl T. Hayden regarding his company's rights to build a railway if they choose to
Trace de Chow, groupes de Lang-Néron, et 1-motifs
No full textCette thèse est consacrée à l’étude de la K /k-trace de Chow, des groupes de Lang-Néron et des 1-motifs (1-motifs de Deligne et motifs de Voevodsky). Dans la première partie, nous montrons que dans le cas des extensions de corps primaires, l’extension des scalaires des 1-motifs de Deligne admet un adjoint à gauche, appelé image de Chow, et un adjoint à droite, appelé trace de Chow. Cela généralise les résultats de Chow sur les variétés abéliennes. Ensuite, nous étudions la trace de Chow dans le cadre des catégories triangulées des motifs (étales) de Voevodsky. Par rapport à la t-structure 1-motivique sur la catégorie des 1-motifs homologiques de Voevodsky, la zéro-ième image directe d’une variété abélienne est donnée par la trace de Chow, et la première image directe est le 0-motif défini par le groupe de Lang-Néron. Dans la deuxième partie, en collaboration avec Bruno Kahn, nous montrons que, pour une variété projective lisse polarisée B ,→ Pn de dimension ≥ 2 sur un corps infini k et une variété abélienne A sur le corps des fonctions de B, il existe un ensemble ouvert de Zariski dense de sections hyperplanes lisses géométriquement connexes h de B tel que A ait bonne réduction en h et que l’homomorphisme de spécialisation des groupes de Lang-Néron en h soit injectif (à un p-groupe fini près en caractéristique positive p). Cela donne une réponse positive à une conjecture du premier auteur, qui est utilisée pour déduire un résultat de négativité sur son accouplement de hauteurs raffiné. Cela donne également un nouvel éclairage sur le théorème de spécialisation de Néron.This thesis is devoted to the study of Chow’s K /k-trace, Lang-Néron groups, and 1-motives (Deligne 1-motives and Voevodsky motives). In the first part, we show that in the case of primary field extensions, the extension of scalars of Deligne 1-motives admits a left adjoint, called Chow image, and a right adjoint, called Chow trace. This generalizes Chow’s results on abelian varieties. Then we study the Chow trace in the framework of Voevodsky’s triangulated categories of (étale) motives. With respect to the 1-motivic t -structure on the category of Voevodsky’s homological 1-motives, the zero-th direct image of an abelian variety is given by the Chow trace, and the first direct image is the 0-motive defined by the (geometric) Lang-Néron group. In the second part, joint with Bruno Kahn, we show that, for a polarised smooth projective variety B ,→ Pn k of dimension ≥ 2 over an infinite field k and an abelian variety A over the function field of B, there exists a dense Zariski open set of smooth geometrically connected hyperplane sections h of B such that A has good reduction at h and the specialisation homomorphism of Lang-Néron groups at h is injective (up to a finite p-group in positive characteristic p). This gives a positive answer to a conjecture of the first author, which is used to deduce a negative definiteness result on his refined height pairing. This also sheds a new light on Néron’s specialisation theorem
Factors influencing birth weight and neonatal weight gain in Chow-Chow puppies
No full textIntroduction and aim. Abnormal birth weight (BW) and neonatal weight gain (NWG) are related to risk of neonatal diseases and mortality. In puppies, a physiological weight loss (<10%) in the first 24-48 h of age is reported (1); then body weight should increase constantly during the first weeks after birth. The BW and NWG are different among breeds of similar size (1), and might be influenced by several factors, such as maternal weight, litter size and neonatal gender. The availability of breed-specific reference values for BW and NWG are necessary for the correct management of normal newborns and for the prompt recognition of puppies underweighted at birth or that fail to growth. The aims of this study were: 1) to depict BW and NWG curve of Chow-Chow puppies; 2) to investigate factors influencing BW and NWG in this breed; 3) to assess possible relations between BW and alive or stillborn puppies, as well as between NWG and surviving or not surviving puppies.
Materials and methods. Seven bitches of a single FCI kennel with a body condition score of 2.5-3/5 were involved in this study. Pregestational maternal body weight (PMBW) was assessed and all bitches were fed with the same commercial diet according to metabolic requirements for gestation and lactation. At whelping, BW of 69 puppies (18 litters) measured before the first suckling, litter size, newborn gender, and alive or stillborn puppies were recorded. All puppies were fed exclusively by maternal milk assumption. Neonatal body weight was daily (morning) monitored for the following 3 weeks of age. The effect of PMBW, litter size and newborn gender on both BW and NWG was evaluated. The relations between alive or stillborn puppies and BW, as well as between neonatal mortality and NWG were also assessed. All data were statistically analyzed by ANCOVA (p<0.05).
Results. All puppies were born by spontaneous whelping, at term of normal pregnancies. At whelping, the litter size was 4±2.03 (mean ±SD). Stillborn accounted for 14% and neonatal deaths for 4%. Mean (±SD) of puppies BW was 403±75 g and PMBW was 32.7±1.78 kg with a ratio of 1.2%. Puppies BW was positively influenced (p<0.0001) by the PMBW. A daily weight gain curve was drawn plotting body weight and age: the exponential trend line resulted in y = 356.48e0.0707x (R2 = 0.99). No significant weight loss was detected in the first 48 hours of age, a constant trend line of growth (p<0.0001) was instead observed from birth to the end of the study. Weekly growth trend line was positively influenced by PMBW (p<0.0001) and negatively by the litter size (p<0.001). In puppies of 3 weeks of age, the mean (±SD) body weight was 1.68 ± 0.46 kg and the ratio to PMBW was 5.3%. No significant differences in both BW and NWG were detected when the gender was considered. Similarly, BW and NWG were not significantly associated with alive/stillborn puppies or with neonatal survival/deaths.
Conclusions. The definition of the birth weight and neonatal weight gain curve for specific breeds could contribute in the estimation of the healthy growth of puppies. In this study, Chow-Chow BW and NWG were defined and they were both influenced by PMBW, as previously reported in humans (2). Neither BW nor NWG were related with neonatal gender or death, although the association between lack of weight gain and neonatal death deserves further investigations.
Acknowledgements. The authors wish to thank the Chow Chow FCI registered kennel “dei Leoni Imperiali” for data collection.
References. 1) Hawthorne et al. J Nutr, 2004;134:2027S-30S. 2) Miletic et al. Coll Antropol, 2007;31:993-7
Mesophilic-hydrothermal-thermophilic (M-H-T) digestion of green corn straw
No full textMesophilic-hydrothermal (80-160 degrees C, 30 min)-thermophilic (M-H-T) digestion and control tests of mesophilic (M), thermophilic (T), hydrothermal-mesophilic (H-M), and mesophilic-thermophilic digestion (M-T) of green corn straw were conducted for a 20-day fermentation period. The results indicate that M-H-T is an efficient method to improve methane production. A maximum methane yield of 371.74 mL/g volatile solid was obtained by the M (3 days)-H (140 degrees C)-T (17 days) process, which was 20.44%, 16.55%, 31.44%, and 14.31% higher than the yields of the M, T, 140-M, and M-T processes. The enhanced methane production was attributed to (1) the improved hemicellulose degradation and lignin disorganization; (2) prevention of the degradation of soluble sugar, easily hydrolyzed hemicellulose and cellulose into furfural and methylfurfural; and (3) lack of formation of Maillard reaction products during initial hydrothermal treatment. (C) 2015 Elsevier Ltd. All rights reserved
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