B738: Costs and Returns in Lowbush Blueberry Production in Maine, 1974 Crop

Blueberry production is primarily a part time enterprise with a wide variation in acreages per grower and a modest investment per acre. Blueberry growers recovered cash costs and most of the variable costs of producing and harvesting the 1974 crop. For a competitive return on investment and a modest wage, the average grower would have had to receive 35 cents rather than 20 cents per pound, considering the yields obtained in 1974. To be reasonably assured of adequate returns, a grower should achieve yields of over 1,000 pounds per acre.https://digitalcommons.library.umaine.edu/aes_bulletin/1086/thumbnail.jp

TB70: Physical and Chemical Changes Associated with the Development of the Lowbush Blueberry Fruit Vaccinium angustifolium Ait.

The objective of this investigation was to determine the growth characteristics, changes in the soluble solids, pH, and titratable acidity for the purpose of defining and describing stages in the growth of the blueberry fruit.https://digitalcommons.library.umaine.edu/aes_techbulletin/1121/thumbnail.jp

B780: A Cost Analysis of Pruning Procedures in Lowbush Blueberry Production

Burning fields with fuel oil is currently the most practical method of pruning blueberries but is costly and destructive to the organic material on the surface of the soil. Fuel oil is a nonrenewable resource that is rapidly increasing in cost and, in the future, may become less readily available for this use. The need to develop alternative means of pruning lowbush bleuberries is evident. This bulletin compares the economics of six pruning procedures on operations of three sizes. The budgets are based on certain assumptions and costs which will change over time. The results will allow blueberry growers to compare procedures to determine which one is most economically feasible for their particular operation and its resources.https://digitalcommons.library.umaine.edu/aes_bulletin/1066/thumbnail.jp

New Azacycles by One-Pot Three-Component Hantzsch-Like Synthesis of Tetra(hexa)azacyclopenta[a]anthracenes, Tetraazaindeno[5,4-b]fluorenes, and Oxatetraazacyclopenta[m]tetraphenes

Multicomponent reactions (MCRs) are envisaged as an entry point for the synthesis of heterocyclic compounds with interesting biological activities. An efficient approach to annelated tetra(hexa)azacyclopenta[a]anthracenes, tetraazaindeno[5,4-b]fluorenes, and oxatetraazacyclopenta[m]tetraphene was accomplished using a three-component reaction involving 7-amino-2-methyl-3-phenylpyrazolo[1,5-a]pyrimidin-5-one with aromatic aldehydes and the corresponding active 1,3-dicarbonyl compounds (namely, dimedone, 1,3-dimethylbarbituric acid, 1,3-indanedione, and 4-hydroxycoumarine). The reactions were conducted in glacial acetic acid at reflux for 5 h to give the desired products in good yields (62–83 %). The chemical constitutions of all new products were confirmed spectroscopically

Efficient synthesis of novel bis(dihydropyrano[2,3c]pyrazoles), bis(4H-chromenes) and bis(dihydropyrano[3,2-c]chromenes) with amide functionality

A synthesis of novel bis(1,4-dihydropyrano[2,3-c]pyrazole-5-carbonitriles), bis(4H-chromene-3-carbonitriles) and bis(dihydropyrano[3,2-c]chromenes), which are linked to aliphatic spacers via amide linkages was achieved via multicomponent reactions (MCR) of the appropriate bis-aldehyde with two equivalents of both of malononitrile and 3-methylpyrazol-5-one, dimedone or 4-hydroxycoumarin in a basic solution

Troubleshooting During Temporary Epicardial Lead Implantation in a Child with an Erosive Twiddler’s Syndrome and Multiple Sternotomies: A case report

Temporary epicardial cardiac pacing in patients with bradyarrhythmias may be used as a bridge to implantation of a permanent pacemaker. The temporary epicardial lead placement may sometimes necessitate a sternotomy that may pose a challenge in patients who have had multiple earlier sternotomies. The difficulty in accessing the epicardium for urgent implantation of temporary epicardial pacing leads depends on the extent of adhesions in such patients. We report an 8-year-8-month-old girl with a pacemaker with an extruded pulse generator and difficult myocardial access due to 5 prior transsternal procedures. The child presented to a tertiary care hospital in Muscat, Oman, in 2021. A trouble-shooting technique was adopted to achieve temporary epicardial pacing to provide time for a course of antibiotic therapy administration. A permanent transvenous pulse generator system was implanted after 7 days of temporary pacing. Keywords: Heart Block; Artificial Pacemaker; Implanted Electrodes; Case Report; Oman

Effects of Melatonin Premedication on the Hemodynamic Responses and Perfusion Index During Laryngoscopy and Endotracheal Intubation

Abstract Context Rational: Several techniques have been proposed to prevent or attenuate the hemodynamic responses following laryngoscopy and intubation, preoperative melatonin has a significant analgesic and anxiolytic effect for patients undergoing surgery. Melatonin may play an important role in controlling hypertension also in humans. The current study aimed at assessing the usefulness of melatonin in attenuating the pressor response to direct laryngoscopy and tracheal intubation. Methods: After approval of the ethics committee and informed written patients consent the study was carried out at rotine surgical theatre of the Suez Canal University Hospital, during the peroid from 2011 -2012 on 90 patients with ASA physical status I, II scheduled for any elective surgery under general anesthesia with endotracheal intubation. Patients were randomly allocated according to computer-generated randomization into three groups: Group I (control group); Group II (melatonin 6mg tablet group) and Group III (melatonin 9mg tablet group). Primary outcome measures include; Heart rate (HR, Systolic blood pressure (SBP), diastolic blood: pressure (DBP), mean arterial pressure (MBP) and perfusion index were recorded before drug premedication, pre-induction, preintubation, 1, 2, 3, 5 and 10 minutes after laryngoscopy and intubation. Moreover perioperative anxiety was evaluated by recording the preoperative and postoperative verbal anxiety score (VAS) of the sample patients. Results: Significant decrease in blood pressure in group II and group III receiving 6mg and 9mg of oral Melatonin 1 hour preoperative at 1, 2, 3, 5 and 10 minutes after intubation as regard SBP, DBP and MBP compared to group I. As regards to heart rate, no significant difference was found between the three groups throughout different time of measurement except for a significant difference at 1 minute after intubation measures for group II and group III compared to the control group. Moreover postoperative verbal anxiety score (VAS) was decreased significantly group II and group III compared to the control group. Correspondence to: Dr. Hosam M. Atef, E-mail: [email protected] Conclusion: Preoperative administration of melatonin one hour before surgery provided a significant decrease hemodynamic response of direct laryngoscopy and tracheal intubation as regard hemodynamic parameters and perfusion index

Blueberry Progress Reports

The 1981 edition of the Blueberry Progress Reports was prepared for the Maine Blueberry Commission and the University of Maine Blueberry Advisory Committee by researchers with the Maine Life Sciences and Agriculture Experiment Station and Maine Cooperative Extension Service at the University of Maine, Orono. Projects in this report include: 1. Weed Control in Lowbush Blueberry Fields 2. Pruning of Blueberries 3. 1982 Blueberry Fruit Fly Monitoring IPM Program 4. Physiology and Culture of the Lowbush Blueberry 5. Blueberry Diseases: Incidence and Control 6. Control, biology, and ecology of insects affecting lowbush blueberries 7. Blueberry Extension Progress Report 8. Plan of Work - 1982 - Blueberry Extensio

Blueberry Research Progress Report

The 1975 edition of the Blueberry Research Progress Report was prepared for the Blueberry Advisory Committee by researchers at the University of Maine, Orono. Projects in this report include: 1. Insects Affecting the Blueberry 2. Weed Control in Blueberry Fields 3. Pruning of Blueberries 4. Integrated Management of Blueberry Fields 5. Selective Thinning of Black Barrenberries in Lowbush Blueberry Fields with Ethrel 6. The Physiology and Biochemistry of the Development of the Lowbush Blueberry Fruit 7. The Development of Blueberry Varieties Adapted to Maine 8. Factors Regulating Rhizome Initiation and Development in the Lowbush Blueberry 9. Mechanical Blueberry Harvesting 10. Blueberry Marketing and Cost Analysis of Producing Blueberries 11. New Food Products and Servic