scholarly journals Continuous Production of Potato in an AFT System

HortScience ◽  
1995 ◽  
Vol 30 (4) ◽  
pp. 790C-790
Author(s):  
G.W. Stutte ◽  
C.L. Mackowiak ◽  
N.C. Yorio ◽  
R.M. Wheeler ◽  
L.M. Ruffe
Keyword(s):  
Steady State ◽  
Life Support ◽  
Continuous Production ◽  
Advanced Life Support ◽  
Plant Size ◽  
Continuous Treatment ◽  
Planting Density ◽  
Tuber Initiation ◽  
Kennedy Space ◽  
Batch Treatment

An experiment was conducted in the Biomass Production Chamber (BPC) at Kennedy Space Center to determine the feasibility of continuous steady-state production of potato (Solanum tuberosum L.). Plants were grown in a “batch” or continuous production mode using either 0.5 × modified Hoaglands or effluent from aerobically processed inedible potato biomass as a nutrient source. EC and pH were controlled to 0.12 S·m–1 and 5.8, respectively. The batch harvest occurred after 104 days and continuous harvest occurred every 26 days, with replanting occurring in the same solution. Continuous production on “aged” solution resulted in earlier tuber initiation, reduced plant height, and smaller canopies than the “batch” treatment. Planting density of the continuous treatment was increased from eight to 16 plants/m2. Because one quarter of the planting area was harvested and replanted every 26 days, a steady-state of canopy coverage between 60% to 75% of the chamber was maintained. Steady-state of CO2 fixation was also maintained in the continuous treatment. There was no effect on either quantum efficiency, tuber yield, or harvest index of the plants grown in continuous production. Although replanting into “aged” nutrient solution resulted in earlier tuber initiation and reduced plant size, the system reached a steady state of production, which is desirable for advanced life support system.

Planning for the Rapid Aerobic Bioreactor Integration Test (RABIT) at the Kennedy Space Center's Advanced Life Support Breadboard Project

1996 ◽  
Author(s):  
Barry W. Finger ◽  
Richard F. Strayer ◽  
Jay L. Garland ◽  
Cheryl L. Mackowiak ◽  
Cheryl F. Atkinson
Keyword(s):  
Life Support ◽  
Advanced Life Support ◽  
Integration Test ◽  
Kennedy Space

scholarly journals Transfer from Long to Short Photoperiods Affects Production Efficiency of Day-neutral Rice

HortScience ◽  
1999 ◽  
Vol 34 (5) ◽  
pp. 875-877 ◽  
Author(s):  
K. Rachelle Goldman ◽  
Cary A. Mitchell
Keyword(s):  
Grain Yield ◽  
Harvest Index ◽  
Production Efficiency ◽  
Life Support ◽  
Continuous Light ◽  
Advanced Life Support ◽  
Tiller Number ◽  
Planting Density ◽  
Yield Efficiency ◽  
Natural Photoperiod

The day-neutral, semidwarf rice (Oryza sativa L.) cultivar Ai-Nan-Tsao was grown in a greenhouse under summer conditions using high-pressure sodium lamps to extend the natural photoperiod. After allowing 2 weeks for germination, stand establishment, and thinning to a consistent planting density of 212 plants/m2, stands were maintained under continuous lighting for 35 or 49 days before shifting to 8- or 12-h photoperiods until harvest 76 days after planting. Non-shifted control treatments consisting of 8-, 12-, or 24-h photoperiods also were maintained throughout production. Tiller number increased as duration of exposure to continuous light increased before shifting to shorter photoperiods. However, shoot harvest index and yield efficiency rate were lower for all plants receiving continuous light than for those under the 8- or 12-h photoperiods. Stands receiving 12-h photoperiods throughout production had the highest grain yield per plant and equaled the 8-h-photoperiod control plants for the lowest tiller number per plant. As long as stands were exposed to continuous light, tiller formation continued. Shifting to shorter photoperiods late in the cropping cycle resulted in newly formed tillers that were either sterile or unable to mature grain before harvest. Late-forming tillers also suppressed yield of grain in early-forming tillers, presumably by competing for photosynthate or for remobilized assimilate during senescence. Stands receiving 12-h photoperiods throughout production not only produced the highest grain yield at harvest but had the highest shoot harvest index, which is important for resource-recovery strategies in advanced life-support systems proposed for space.

scholarly journals Process and Product: Recirculating Hydroponics and Bioactive Compounds in a Controlled Environment

HortScience ◽  
2006 ◽  
Vol 41 (3) ◽  
pp. 526-530 ◽  
Author(s):  
Gary W. Stutte
Keyword(s):  
Production Efficiency ◽  
Production Systems ◽  
Higher Plants ◽  
Continuous Production ◽  
Planting Density ◽  
Crop Species ◽  
Nutrient Film Technique ◽  
Long Duration ◽  
Crop Development ◽  
Kennedy Space

NASA has investigated the use of recirculating nutrient film technique (NFT) systems to grow higher plants on long-duration space missions for many years and has demonstrated the feasibility of using recirculating systems on numerous crop species. A long duration (418-day) experiment was conducted at Kennedy Space Center, Fla., to evaluate the feasibility of using recirculating hydroponics for the continuous production of Solanum tuberosum L. `Norland'. The productivity of four sequential batch plantings was compared to staggered harvest and plantings. The accumulation of bioactive organic compounds in the nutrient solution resulted in reduced plant height, induced early tuber formation, and increased harvest index of the crops in both production systems. The changes in crop development were managed by increasing planting density and reducing cycle time to sustain production efficiency.

Recommended Guidelines for Uniform Reporting of Pediatric Advanced Life Support: The Pediatric Utstein Style

Circulation ◽  
1995 ◽  
Vol 92 (7) ◽  
pp. 2006-2020 ◽  
Author(s):  
Arno Zaritsky ◽  
Vinay Nadkarni ◽  
Mary Fran Hazinski ◽  
George Foltin ◽  
Linda Quan ◽  
...  
Keyword(s):  
Life Support ◽  
Advanced Life Support ◽  
Recommended Guidelines ◽  
Utstein Style

Code Blue Events in the Neonatal and Pediatric Intensive Care Units at a Tertiary Care Children's Hospital

2020 ◽  
Author(s):  
Catherine M. Groden ◽  
Erwin T. Cabacungan ◽  
Ruby Gupta
Keyword(s):  
Intensive Care Unit ◽  
Intensive Care ◽  
Life Support ◽  
Univariate Analysis ◽  
Tertiary Care ◽  
Neonatal Resuscitation ◽  
Advanced Life Support ◽  
Pediatric Intensive Care ◽  
Code Blue ◽  
Neonatal Resuscitation Program

Objective The authors aim to compare all code blue events, regardless of the need for chest compressions, in the neonatal intensive care unit (NICU) versus the pediatric intensive care unit (PICU). We hypothesize that code events in the two units differ, reflecting different disease processes. Study Design This is a retrospective analysis of 107 code events using the code narrator, which is an electronic medical record of real-time code documentation, from April 2018 to March 2019. Events were divided into two groups, NICU and PICU. Neonatal resuscitation program algorithm was used for NICU events and a pediatric advanced life-support algorithm was used for PICU events. Events and outcomes were compared using univariate analysis. The Mann–Whitney test and linear regressions were done to compare the total code duration, time from the start of code to airway insertion, and time from airway insertion to end of code event. Results In the PICU, there were almost four times more code blue events per month and more likely to involve patients with seizures and no chronic condition. NICU events more often involved ventilated patients and those under 2 months of age. The median code duration for NICU events was 2.5 times shorter than for PICU events (11.5 vs. 29 minutes), even when adjusted for patient characteristics. Survival to discharge was not different in the two groups. Conclusion Our study suggests that NICU code events as compared with PICU code events are more likely to be driven by airway problems, involve patients <2 months of age, and resolve quickly once airway is taken care of. This supports the use of a ventilation-focused neonatal resuscitation program for patients in the NICU. Key Points

scholarly journals European Resuscitation Council Guidelines 2021: Adult advanced life support

Resuscitation ◽  
2021 ◽  
Author(s):  
Jasmeet Soar ◽  
Bernd W. Böttiger ◽  
Pierre Carli ◽  
Keith Couper ◽  
Charles D. Deakin ◽  
...  
Keyword(s):  
Life Support ◽  
Advanced Life Support ◽  
European Resuscitation Council

Improving the Appropriateness of Advanced Life Support Teams’ Dispatch: A Before-After Study

2021 ◽  
pp. 1-7
Author(s):  
Lorenzo Gamberini ◽  
Cosimo Picoco ◽  
Donatella Del Giudice ◽  
Corrado Zenesini ◽  
Marco Tartaglione ◽  
...  
Keyword(s):  
Sensitivity And Specificity ◽  
Life Support ◽  
Advanced Life Support ◽  
Emergency Operation ◽  
Support Teams ◽  
Global Sensitivity ◽  
Emergency Logistics ◽  
Prehospital Emergency ◽  
Task Time ◽  
Algorithm Implementation

Abstract Background and Importance: The dispatch of Advanced Life Support (ALS) teams in Emergency Medical Services (EMS) is still a hardly studied aspect of prehospital emergency logistics. In 2015, the dispatch algorithm of Emilia Est Emergency Operation Centre (EE-EOC) was implemented and the dispatch of ALS teams was changed from primary to secondary based on triage of dispatched vehicles for high-priority interventions when teams with Immediate Life Support (ILS) skills were dispatched. Objectives: This study aimed to evaluate the effects on the appropriateness of ALS teams’ intervention and their employment time, and to compare sensitivity and specificity of the algorithm implementation. Design: This was a retrospective before-after observational study. Settings and Participants: Primary dispatches managed by EE-EOC involving ambulances and/or ALS teams were included. Two groups were created on the basis of the years of intervention (2013-2014 versus 2017-2018). Intervention: A switch from primary to secondary dispatch of ALS teams in case of high-priority dispatches managed by ILS teams was implemented. Outcomes: Appropriateness of ALS team intervention, total task time of ALS vehicles, and sensitivity and specificity of the algorithm were reviewed. Results: The study included 242,501 emergency calls that generated 56,567 red code dispatches. The new algorithm significantly increased global sensitivity and specificity of the system in terms of recognition of potential need of ALS intervention and the specificity of primary ALS dispatch. The appropriateness of ALS intervention was significantly increased; total tasking time per day for ALS and the number of critical dispatches without ALS available were reduced. Conclusion: The revision of the dispatch criteria and the extension of the two-tiered dispatch for ALS teams significantly increased the appropriateness of ALS intervention and reduced both the global tasking time and the number of high-priority dispatches without ALS teams available.

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