RADIOGRAPHIC DIAGNOSIS: INTRAMEDULLARY EXTRUSION OF AN INTERVERTEBRAL DISC     

Julius M.  Liptak  BVSc  MvetClinstud  MACVSc  Graeme S.  Allan  MVSc  FACVSc  Mark B.  Krockenberger  BSc  BVSc  Phillip E.  Davis  MVSc  Richard  Malik  BVSc  MvetClinStud  PhD  FACVSc 《Veterinary radiology & ultrasound》2002,43(3):272-274

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Stabilization of labile carbonyl addition intermediates by a synthetic receptor     

Iwasawa T  Hooley RJ  Rebek J 《Science (New York, N.Y.)》2007,317(5837):493-496

Products of unfavorable chemical equilibria are not readily observed because their high energy and increased reactivity result in low concentrations. Biological macromolecules use binding forces to access unfavorable equilibria and stabilize reactive intermediates by isolating them from the medium. In a similar vein, we describe here a synthetic receptor that allows direct observation of labile tetrahedral intermediates: hemiaminals formed in the reaction of an aldehyde carbonyl group with amines. The receptor encapsulates alkyl-substituted primary amines, then orients them toward a covalently tethered aldehyde function. The hemiaminal intermediates appear at high concentration, confined from the bulk solution and observable at ambient temperature by conventional nuclear magnetic resonance spectroscopy.  相似文献   

Risk factors influencing death prior to discharge in 302 dogs undergoing unilateral adrenalectomy for treatment of primary adrenal gland tumours     

Hunter J. Piegols  Brittany E. Abrams  Janis M. Lapsley  Megan T. Cray  Josephine A. Dornbusch  Christina Murphy  Brandan G. Wustefeld-Janssens  Carlos H. Souza  Marine Traverson  Pierre Amsellem  Elroy Williams  Owen T. Skinner  Julius M. Liptak  Julie A. Stephens  Laura E. Selmic 《Veterinary and comparative oncology》2023,21(4):673-684

Adrenalectomies for canine adrenal tumours are associated with peri-operative morbidity and mortality. Objectives of this study included assessing the prognostic value of tumour- or surgery-related variables in predicting peri-operative mortality and overall survival in dogs undergoing adrenalectomies for primary adrenal tumours as well as pre-treatment with phenoxybenzamine on survival to discharge with pheochromocytomas specifically. A multi-institutional retrospective cohort study was performed across nine institutions. Electronic medical record searches identified 302 dogs which met the inclusion criteria. Data collected included dog-related, tumour-related, treatment-related, surgery-related, and outcome variables. Univariate and multivariable logistic regression and cox proportional hazards models were used to identify variables associated with death prior to discharge and tumour-related survival. Overall, 87% of dogs survived to discharge with a tumour-related survival time of 3.96 years. Post-operative complications were reported in 25%. Increased surgical time (p = 0.002) and pre-surgical medical treatment other than phenoxybenzamine (p = 0.024) were significantly associated with increased peri-operative mortality while ureteronephrectomy (p = 0.021), post-operative pancreatitis (p = 0.025), and post-operative aspiration pneumonia (p < 0.001) were significantly associated with decreased overall survival. Phenoxybenzamine pretreatment had no effect on peri-operative mortality. Thirty-seven of 45 (82%) dogs with pheochromocytomas not pretreated survived to discharge, and 50 of 59 (85%) dogs with pheochromocytomas pretreated with phenoxybenzamine survived to discharge (p = 0.730). This study provides information on risk factors for death prior to discharge and tumour-related survival that may help guide clinical management and owner expectations. In addition, the study findings challenge the previously reported benefit of phenoxybenzamine for pretreatment of dogs undergoing adrenalectomies for pheochromocytomas.  相似文献   

Effects of planting density on the productivity and water use of tea (Camellia sinensis L.) clones: I. Measurement of water use in young tea using sap flow meters with a stem heat balance method     

Julius M. Kigalu   《Agricultural Water Management》2007,90(3):224-232

Sap flow meters based on the stem heat balance method were used to measure the mass flow rates or water use in young potted tea (Camellia sinensis L.) plants of clones AHP S15/10 and BBK35. The meters were constructed on site and installed onto the stem or branch sections of field growing plants in an experiment originally designed to study the effects of plant population density and drought on the productivity and water use of young tea clones. The objective of the study was to use the SHB method as a first attempt to use sap flow meters for determining the water use of young tea growing in the field under well watered conditions in Tanzania. The results are reported and recommendation made for further work on using the technique.  相似文献   

Complete Larval Development of the Fresh Water Prawn Macrobrachium vollenhovenii in Cameroon     

Judith G. Makombu  Pius M. Oben  Benedicta O. Oben  Guillaume L. P. Gaudin  Isabelle S. Motto  Ndelle Makoge 《Journal Of Applied Aquaculture》2013,25(4):310-328

The African River prawn Macrobrachium vollenhovenii is the largest of the local Palaemonidae prawns along the Cameroonian coast and an important target species for fisheries and aquaculture. A preliminary study on larviculture of this species was carried out at the IRAD-AQUASOL hatchery in Kribi, Cameroon. Berried females M. vollenhovenii were obtained from the Lobe and Lokoundje Rivers in the Southern Region, typical Lower Guinea rainforest streams. The larval rearing system consisted of a single recirculation system of four 65 L cylindrical plastic containers connected to a submerged biological filter container (65 L). Experiments were conducted three times in the same condition, with two batches of larvae reared separately in duplicate per experiment, at a density of 40/L, temperature 26°C, and salinity 16%. Larvae were fed from 1 day after hatching until metamorphosis to postlarvae (PL) with newly hatched Artemia nauplii, three times daily at the rate of 5 nauplii per mL water. The number of newly hatched larvae per female body weight unit was not affected by the female size and ranged between 531 to 1349 larvae g^?1. The six batches succeeded from hatching to metamorphosis, and the 11 distinct larval stages described for M. rosenbergii were found. Larvae in all the batches developed more or less at the same pace up to stage V. However, a clear difference in the timing of appearance of the developmental stages was observed between batches and individuals of the same batch during the subsequent stages. The transition from stage V to stage VI and from stage IX to stage X was longer than the passage to other stages and seems to be the critical rearing period of M. vollenhovenii. From day 20 onward to sampling, the larval stage index (LSI) showed that larval development of the batch 1 was significantly faster than for all other batches. The time for first appearance of postlarvae was variable between batches (41–74 days), and batch 1 larvae passed through metamorphosis within a shorter span of time (41 days). Survival up to postlarvae was variable among batches, ranging between 3%–9%, and was better in batch 1 (9.31 ± 1.09). The general poor performance in terms of survival and metamorphosis rates of larvae seems to be related to the wild condition of broodstock. To improve performance of larvae, domestication of stock may be necessary. This result is the first recorded success in larviculture of M. vollenhovenii in Cameroon.  相似文献   

Dauerwiesen im Walde     

D. Julius 《Forstwissenschaftliches Centralblatt》1934,56(4):134-138

Ohne Zusammenfassung  相似文献   

Beiträge zur Lichtungsfrage     

kgl. ung. Forstmeister Julius Roth 《European Journal of Forest Research》1916,38(1):43-48

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Einiges über die fichte in den Ostkarpathen     

Julius Fröhlich Ing. 《European Journal of Forest Research》1936,58(12):407-412

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Julius Fröhlich 《Forstwissenschaftliches Centralblatt》1936,58(12):407-412

Ohne Zusammenfassung  相似文献   

Die Heberklause und Berechnung von Sperr- und Klausmauern aus ihre Bogenwirkung     

Julius Duhm 《European Journal of Forest Research》1925,47(7):517-536

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