SHORT COMMUNICATION: Exchange of 15N among plants in controlled environment studies

1994 ◽  
Vol 74 (1) ◽  
pp. 109-110 ◽  
Author(s):  
H. H. Janzen ◽  
C. Gilbertson
Keyword(s):  
Key Words ◽  
Nitrogen Fertilizer ◽  
Short Communication ◽  
Controlled Environment ◽  
Atmospheric Ammonia ◽  
Atmospheric Exchange ◽  
Selection Of ◽  
Air Exchange

Barley receiving unlabelled nitrogen fertilizer was grown among treatments receiving Ca(15NO3)2 fertilizer (5 atom %) in a growth cabinet with high air exchange and in a greenhouse. In both environments, the unlabelled plants and soil were significantly enriched with 15N, apparently, in part, by foliar exchange of atmospheric ammonia. This exchange may warrant consideration in the selection of appropriate controls for 15N calculations. Key words:15N, ammonia, atmospheric exchange

SHORT COMMUNICATION: Difficulties in using 137Cs to measure erosion in stubble-mulched soil

1995 ◽  
Vol 75 (3) ◽  
pp. 357-359 ◽  
Author(s):  
E. Bremer ◽  
H. H. Janzen ◽  
E. de Jong
Keyword(s):  
Soil Erosion ◽  
Key Words ◽  
Short Communication ◽  
Crop Rotations ◽  
Present Evidence ◽  
Southern Alberta ◽  
Communication Difficulties ◽  
Cesium 137

Soil erosion may be difficult to quantify from redistribution of 137Cs at sites where stubble-mulch techniques were adopted prior to 137Cs deposition, because appreciable 137Cs may have been transported before it was mixed into the soil Ap layer. We present evidence that this occurred in two long-term cropping experiments in southern Alberta. Key words: Cesium-137, tillage, long-term crop rotations, fallow

SOME ASPECTS OF THE CONSTRUCTION OF THE THEMATIC TESTS FOR THE DIAGNOSIS OF COGNITIVE LEARNING OUTCOMES CHEMISTRY ENGINEERING STUDENTS

2015 ◽  
Author(s):  
Liudmila Gorbunova ◽  
Keyword(s):  
Key Words ◽  
Learning Outcomes ◽  
Diagnostic Test ◽  
Engineering Students ◽  
High Reliability ◽  
Cognitive Learning ◽  
Reliability And Validity ◽  
Educational Measurement ◽  
Selection Of ◽  
Cognitive Learning Outcomes

The article discusses the procedure of the preparation of test materials for the diagnosis of cognitive learning outcomes in chemistry. It is shown that the use of the thesaurus approach to the selection of the content and methods of mathematical statistics provides a test with high reliability and validity coefficients. Key words: diagnostic test, chemistry, educational measurement.

Prophylaxis of obstetric and perinatal pathology at women with pathological increase of body weight during pregnancy

2018 ◽  
pp. 7-79
Author(s):  
S.Yu. Vdovichenko ◽  
◽  
T.D. Fakhrutdinova ◽  
Keyword(s):  
Health Care ◽  
Body Weight ◽  
Pregnant Women ◽  
Key Words ◽  
Perinatal Outcomes ◽  
Perinatal Complications ◽  
Perinatal Pathology ◽  
Fetoplacental Complex ◽  
The Right ◽  
Selection Of

The objective: depression of obstetric and perinatal complications at pregnant women with pathological increase of body weight during pregnancy on the basis of studying of clinical-functional, endocrinologic, metabolic, morphological features of condition of fetoplacental complex and development of advanced algorithm of treatment-and-prophylactic actions. Materials and methods. We conducted examination of 264 patients who consisted on the account concerning pregnancy in female consultations of Kiev. By a method of selection of 178 women were included in retrospective research and 86 – in prospective. The main group was made by 39 pregnant women with whom led individual discussions, control – 142 women, that received traditional references in female consultation. Results. Use of the algorithm improved by us allows to improve obstetric (decrease of frequency of a preeclampsia by 12.3%; anomalies of a patrimonial deyalnost for 8.4%) and perinatal outcomes (depression of level of an asphyxia at a delivery for 9.4% and post-natal adaptation for 7.8%) deliveries of women with an excessive increase of body weight during pregnancy. Conclusion. The received results grant the right to recommend the algorithm improved by us for wide use in practical health care. Key words: obstetric and perinatal pathology, pathological increase of body weight, prophylaxis.

scholarly journals Asexual Propagation of Eggplant (Solanum melongena L.) through Encapsulated Axillary Buds

1970 ◽  
Vol 19 (2) ◽  
pp. 263-288 ◽  
Author(s):  
A.K.M. N. Huda ◽  
, M.A. Bari ◽  
M. Rahman
Keyword(s):  
Key Words ◽  
Plant Tissue ◽  
Short Communication ◽  
Solanum Melongena ◽  
Axillary Buds ◽  
Synthetic Seed ◽  
Asexual Propagation

 Key words: Auxillary buds, Eggplant, Encapsulation, Synthetic seed D.O.I. 10.3329/ptcb.v19i2.5445 Plant Tissue Cult. & Biotech. 19(2): 263-288, 2009 (December)       - Short communication

scholarly journals El poder subversivo de la fábula en sus diversas manifestaciones diacrónicas

2015 ◽  
pp. 153
Author(s):  
Gordana Matic
Keyword(s):  
Key Words ◽  
19Th Century ◽  
The Other ◽  
Critical Aspect ◽  
Other Hand ◽  
Palabras Clave ◽  
Moral Aspect ◽  
Definition Of ◽  
Historical Periods ◽  
Selection Of

<div class="WordSection1"><p><strong>Resumen</strong></p><p>La fábula ha tenido desde siempre una función retórica e ilustrativa que se ha manifestado a lo largo de la historia de modo dual: mostraba para enseñar, lo que muchas veces implicaba el componente moralizador, o para criticar. Mientras se empeñaba en conseguir una de las dos intencionalidades, o las dos simultáneamente, ha podido ser revestida de un tono humorístico, burlón, irónico o sarcástico. Partiendo de las observaciones sobre el género de Fedro, Rodríguez Adrados o Mireya Camurati, en este trabajo nos proponemos analizar una selección de fábulas clásicas, medievales, dieciochescas y decimonónicas, para demostrar que el aspecto crítico e incluso subversivo del género se mantiene abiertamente activo aun en las épocas en las que se potencia su intención didáctico-moralizante.</p><p>Palabras clave: fábula, definiciones del género, estudio diacrónico, aspecto crítico, aspecto didáctico-moralizante</p><p> </p><p><strong>Abstract</strong></p><p>The fable has always had a rhetoric and illustrative function that manifested itself during its long history in two different ways: on one hand, it represented an example in order to teach, which usually implied the moral component, or on the other hand, to criticize. While it strived to achieve one of these intentions, or sometimes both simultaneously, it could have been written in a humorous, mocking, ironic or sarcastic tone. In this paper, we analyze a selection of classical and medieval, 18th and 19th century fables written in Spanish, with definitions proposed by Phaedrus, Rodríguez Adrados and Mireya Camurati as starting points, in order to show that the critical aspect of this genre was openly maintained and taken benefit of even in the historical periods when its didactic and moralizing intention was preferred and strongly emphasized.</p></div><p>Key words: fable, definition of genre, diachronic approach, critical aspect, didactic and moral aspect</p><p> </p>

Selecting for earliness and yield in sorghum at different sites

1991 ◽  
Vol 71 (1) ◽  
pp. 191-194 ◽  
Author(s):  
S. Plett ◽  
L. A. Nelson ◽  
M. D. Clegg
Keyword(s):  
Sorghum Bicolor ◽  
Key Words ◽  
Early Maturity ◽  
Early Maturing ◽  
Short Season ◽  
Selection For ◽  
Different Origins ◽  
Sorghum Bicolor L ◽  
Selection Of

Feasibility of selection of sorghum [Sorghum bicolor (L.) Moench] lines in a long–season environment for early maturity and yield was studied. Fifty-seven male lines from three different origins and F1 progenies produced by crossing the lines to three early-maturing female lines were used for these evaluations. Lines selected for yield had highest yield in a long-season environment but showed no yield advantage in short-season areas. There were lines from all three origins which should be useful in the locations tested. Selection for earliness and yield appeared feasible in a long season area. Key words: Heritability, correlation

Host range of Puccinia xanthii and postpenetration development on Xanthium occidentale

1993 ◽  
Vol 71 (7) ◽  
pp. 959-965 ◽  
Author(s):  
Louise Morin ◽  
Bruce A. Auld ◽  
John F. Brown
Keyword(s):  
Key Words ◽  
Host Range ◽  
Weed Control ◽  
Biological Weed Control ◽  
Controlled Environment ◽  
Globe Artichoke ◽  
Disease Symptoms ◽  
Severity Of The Disease ◽  
Stem Lesions ◽  
Slow Growing

In glasshouse studies, small necrotic foliar flecks developed on globe artichoke, calendula, slender thistle, and winged slender thistle following inoculation with basidiospores of the microcyclic rust Puccinia xanthii. Fourteen inoculated cultivars of sunflower developed various types of symptoms: small necrotic and chlorotic flecks, underdeveloped telia, and small swollen petiole and stem lesions. Xanthium spinosum developed very slow-growing telia. In controlled environment studies, the four Xanthium spp. comprising the Noogoora burr (cocklebur) complex in Australia were highly susceptible to infection by P. xanthii. Maximum disease severity was observed after rust telia and X. occidentale plants were exposed to a dew period of 24 h. Less disease symptoms were observed in plants exposed to shorter (3, 6, 12 h) or longer (36 h) dew periods. Plants inoculated with several loads of inoculum (exposure to four inoculum plates) were less diseased than plants inoculated with fewer inoculum loads. Infected plants began to develop disease symptoms 5 days after inoculation, when grown at 25 °C. Infected plants developed very few small chlorotic flecks and no disease symptoms when grown at 10 and 40 °C, respectively. The flecks produced on plants kept at 10 °C developed into telia when plants were transferred to a glasshouse (25 °C). Repetitive inoculations of plants for 1 month increased the overall severity of the disease and this resulted in a reduction in plant height. Key words: Xanthium, host range, Puccinia xanthii, biological weed control.

scholarly journals Bone breakage in three strains of end-of-lay hens

2004 ◽  
Vol 84 (4) ◽  
pp. 745-747 ◽  
Author(s):  
K. L. Budgell ◽  
F. G. Silversides
Keyword(s):  
Key Words ◽  
Bone Strength ◽  
Egg Production ◽  
Bone Fractures ◽  
Broken Bones ◽  
Selection Of

Spent hens of two commercial lines and one heritage line of layers were slaughtered at 72 wk of age and dissected to determine the number of bone fractures before shipping, during depopulation and shipping, and during slaughter. The ISA-Brown and Babcock B300 hens had higher incidences of old (11.1 and 11.7%) and shipping breaks (7.9 and 10.0%) than a line of Brown Leghorns (0.0 and 3.5%, respectively), suggesting that selection of commercial layers for increased egg production may have affected bone strength. All hens experienced broken bones during processing. Key words: Layers, strain, bone breakage

INFLUENCE OF BREED, BIRTH DATE, AGE AND BODY WEIGHT ON LINEAR BODY MEASUREMENTS OF GROWING RAMS MAINTAINED IN A CONTROLLED ENVIRONMENT

1984 ◽  
Vol 64 (2) ◽  
pp. 279-291 ◽  
Author(s):  
J. N. B. SHRESTHA ◽  
D. P. HEANEY ◽  
P. S. FISER ◽  
G. A. LANGFORD
Keyword(s):  
Body Weight ◽  
Key Words ◽  
Litter Size ◽  
Body Length ◽  
Birth Date ◽  
Controlled Environment ◽  
Body Measurements ◽  
Leg Length ◽  
The Relationship ◽  
Linear Body

Heart girth (HG), body length (BL), leg length (LL), metacarpal circumference (MC), withers height (WH) and hook width (HW) of 233 growing rams of three synthetic strains, Suffolk and Finnsheep breeds were measured at 6, 8 and 10 mo of age. Thereafter, subsequent measurements were taken at 11–13 mo, 18–21 mo and 23–25 mo of age. Breed, birth period (hysterectomy derived birth date), age of ram and body weight (BW) had important effects (P < 0.05) on linear body measurements, whereas age of dam did not (P > 0.05). Significant effects of litter size on HG and BL were observed at 6 and 8 mo of age, respectively. All linear body measurements increased from 6 to 21 mo of age, whereas BL, WH and HW continued to increase to 25 mo. Rams of Strain 1, developed as a synthetic sire strain, with a large proportion of Suffolk background were generally similar to the Suffolk rams in all body measurements except for HG which was significantly larger than in Suffolk rams. The Finnsheep rams had smaller HG, BL, MC and HW than the synthetic strains and Suffolk rams, whereas LL and WH of the Finnsheep and Suffolk rams were similar. Rams of Strains 2 and 3, developed as synthetic dam strains with 50 percent Finnsheep background, were similar in body measurements. The synthetic dam strains did not differ from Strain 1 and/or Suffolk with respect to HG, BL, WH and HW. However, Suffolk rams had larger MC and shorter LL compared to those of the Strain 2 and 3 rams. Birth period had a significant effect on HG, BL, LL and MC, but no consistent trend with age of ram was apparent. Linear body measurements were positively correlated with each other and with body weight; however, the relationship varied as rams progressed in age. The importance of breed, birth date, age of ram and body weight on body measurements and the requirements for appropriate adjustments is emphasized. Key words: Sheep, body measurements, breed, birth date, age of ram

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